diff --git a/t/test_classify.cc b/t/test_classify.cc
index a482fa7..63abe64 100644
--- a/t/test_classify.cc
+++ b/t/test_classify.cc
@@ -1,933 +1,957 @@
 /**
  *  \authors   The HEJ collaboration (see AUTHORS for details)
  *  \date      2019
  *  \copyright GPLv2 or later
  */
 #include <iostream>
 #include <random>
 
 #include "HEJ/Event.hh"
 #include "HEJ/exceptions.hh"
 
 #define ASSERT(x) if(!(x)) { \
     throw std::logic_error("Assertion '" #x "' failed."); \
   }
 
 namespace {
   const fastjet::JetDefinition jet_def{fastjet::JetAlgorithm::antikt_algorithm, 0.4};
   const double min_jet_pt{30.};
   const std::array<std::string, 6> all_quarks{"-4","-1","1","2","3","4"};
   const std::array<std::string, 7> all_partons{"g","-2","-1","1","2","3","4"};
   const std::array<std::string, 3> all_bosons{"h", "Wp", "Wm"};
 
   static std::mt19937_64 ran{0};
 
   void shuffle_particles(HEJ::Event::EventData & ev) {
     // incoming
     std::shuffle(begin(ev.incoming), end(ev.incoming), ran);
     // outgoing (through index)
     auto old_outgoing = std::move(ev.outgoing);
     std::vector<size_t> idx(old_outgoing.size());
     std::iota(idx.begin(), idx.end(), 0);
     std::shuffle(begin(idx), end(idx), ran);
     ev.outgoing.clear();
     ev.outgoing.reserve(old_outgoing.size());
     for(size_t i: idx) {
       ev.outgoing.emplace_back(std::move(old_outgoing[i]));
     }
     // find decays again
     if(!ev.decays.empty()){
       auto old_decays = std::move(ev.decays);
       ev.decays.clear();
       for(size_t i=0; i<idx.size(); ++i) {
         auto decay = old_decays.find(idx[i]);
         if(decay != old_decays.end())
           ev.decays.emplace(i, std::move(decay->second));
       }
     }
   }
 
   // if pos_boson = -1 (or not implemented) -> no boson
   // njet==7 is special: has less jets, i.e. multiple parton in one jet,
   //                     pos_boson < 0 to select process (see list for details)
   HEJ::Event::EventData get_process(int const njet, int const pos_boson){
     using namespace HEJ::pid;
     HEJ::Event::EventData ev;
     if(njet == 2){
       switch(pos_boson){
       case 0:
         ev.outgoing.push_back({higgs, { 198,   33, -170,  291}, {}});
         ev.outgoing.push_back({gluon, {-154,   68,   44,  174}, {}});
         ev.outgoing.push_back({gluon, { -44, -101,   88,  141}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -322,  322}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  284,  284}, {}};
         return ev;
       case 1:
         ev.outgoing.push_back({gluon, {  -6,   82, -159,  179}, {}});
         ev.outgoing.push_back({higgs, { 195, -106,   74,  265}, {}});
         ev.outgoing.push_back({gluon, {-189,   24,  108,  219}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -320,  320}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  343,  343}, {}};
         return ev;
       case 2:
         ev.outgoing.push_back({gluon, { -80,  -80, -140,  180}, {}});
         ev.outgoing.push_back({gluon, { -60,  -32,    0,   68}, {}});
         ev.outgoing.push_back({higgs, { 140,  112,  177,  281}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -246,  246}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  283,  283}, {}};
         return ev;
       default:
         ev.outgoing.push_back({gluon, { -72,   24,   18,   78}, {}});
         ev.outgoing.push_back({gluon, {  72,  -24,   74,  106}, {}});
         ev.incoming[0] = {gluon, {   0,    0,  -46,   46}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  138,  138}, {}};
         return ev;
       }
     }
     if(njet == 3){
       switch(pos_boson){
       case 0:
         ev.outgoing.push_back({higgs, { 152, -117,  -88,  245}, {}});
         ev.outgoing.push_back({gluon, {-146,   62,  -11,  159}, {}});
         ev.outgoing.push_back({gluon, { 126,  -72,   96,  174}, {}});
         ev.outgoing.push_back({gluon, {-132,  127,  144,  233}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -335,  335}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  476,  476}, {}};
         return ev;
       case 1:
         ev.outgoing.push_back({gluon, {-191,  188, -128,  297}, {}});
         ev.outgoing.push_back({higgs, { 199,   72,  -76,  257}, {}});
         ev.outgoing.push_back({gluon, { 184, -172,   -8,  252}, {}});
         ev.outgoing.push_back({gluon, {-192,  -88,   54,  218}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -591,  591}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  433,  433}, {}};
         return ev;
       case 2:
         ev.outgoing.push_back({gluon, { -42,   18,  -49,   67}, {}});
         ev.outgoing.push_back({gluon, { -12,  -54,  -28,   62}, {}});
         ev.outgoing.push_back({higgs, {  99,   32,  -16,  163}, {}});
         ev.outgoing.push_back({gluon, { -45,    4,   72,   85}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -199,  199}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  178,  178}, {}};
         return ev;
       case 3:
         ev.outgoing.push_back({gluon, { -65,  -32,  -76,  105}, {}});
         ev.outgoing.push_back({gluon, { -22,   31,  -34,   51}, {}});
         ev.outgoing.push_back({gluon, { -12,  -67,  -36,   77}, {}});
         ev.outgoing.push_back({higgs, {  99,   68,   -4,  173}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -278,  278}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  128,  128}, {}};
         return ev;
       default:
         ev.outgoing.push_back({gluon, { -90, -135,   30,  165}, {}});
         ev.outgoing.push_back({gluon, {-108,  198,   76,  238}, {}});
         ev.outgoing.push_back({gluon, { 198,  -63,  126,  243}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -207,  207}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  439,  439}, {}};
         return ev;
       }
     }
     if(njet == 4){
       switch(pos_boson){
       case 0:
         ev.outgoing.push_back({higgs, { 199,   72,  -76,  257}, {}});
         ev.outgoing.push_back({gluon, {-200, -155,  -64,  261}, {}});
         ev.outgoing.push_back({gluon, { 198,  194,   57,  283}, {}});
         ev.outgoing.push_back({gluon, {   1,   32,    8,   33}, {}});
         ev.outgoing.push_back({gluon, {-198, -143,  186,  307}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -515,  515}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  626,  626}, {}};
         return ev;
       case 1:
         ev.outgoing.push_back({gluon, { 198,   61, -162,  263}, {}});
         ev.outgoing.push_back({higgs, { 199,   72,  -76,  257}, {}});
         ev.outgoing.push_back({gluon, {-200,  135,  144,  281}, {}});
         ev.outgoing.push_back({gluon, {-198, -186,  171,  321}, {}});
         ev.outgoing.push_back({gluon, {   1,  -82,  122,  147}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -535,  535}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  734,  734}, {}};
         return ev;
       case 2:
         ev.outgoing.push_back({gluon, {-180,  -27, -164,  245}, {}});
         ev.outgoing.push_back({gluon, {-108,   78,  -36,  138}, {}});
         ev.outgoing.push_back({higgs, { 196, -189,   68,  307}, {}});
         ev.outgoing.push_back({gluon, {-107,  136,   76,  189}, {}});
         ev.outgoing.push_back({gluon, { 199,    2,  178,  267}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -512,  512}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  634,  634}, {}};
         return ev;
       case 3:
         ev.outgoing.push_back({gluon, { -12,  -30,  -84,   90}, {}});
         ev.outgoing.push_back({gluon, { -72,   22,  -96,  122}, {}});
         ev.outgoing.push_back({gluon, {  68,    0,  -51,   85}, {}});
         ev.outgoing.push_back({higgs, {  64,   72,  -81,  177}, {}});
         ev.outgoing.push_back({gluon, { -48,  -64,   84,  116}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -409,  409}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  181,  181}, {}};
         return ev;
       case 4:
         ev.outgoing.push_back({gluon, { -72,  -49,  -72,  113}, {}});
         ev.outgoing.push_back({gluon, { -48,    0,  -36,   60}, {}});
         ev.outgoing.push_back({gluon, { -12,   54,  -36,   66}, {}});
         ev.outgoing.push_back({gluon, {  68,  -77,  -56,  117}, {}});
         ev.outgoing.push_back({higgs, {  64,   72,  -81,  177}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -407,  407}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  126,  126}, {}};
         return ev;
       default:
         ev.outgoing.push_back({gluon, { 248,  -56, -122,  282}, {}});
         ev.outgoing.push_back({gluon, { 249,   30,  -10,  251}, {}});
         ev.outgoing.push_back({gluon, {-249,  -18,   26,  251}, {}});
         ev.outgoing.push_back({gluon, {-248,   44,  199,  321}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -506,  506}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  599,  599}, {}};
         return ev;
       }
     }
     if(njet == 6){
       switch(pos_boson){
       case 0:
         ev.outgoing.push_back({higgs, { 349,  330,  -94,  505}, {}});
         ev.outgoing.push_back({gluon, {-315, -300,    0,  435}, {}});
         ev.outgoing.push_back({gluon, { 347,  306,   18,  463}, {}});
         ev.outgoing.push_back({gluon, {-249, -342,  162,  453}, {}});
         ev.outgoing.push_back({gluon, { 345,  312,  284,  545}, {}});
         ev.outgoing.push_back({gluon, {-324, -126,  292,  454}, {}});
         ev.outgoing.push_back({gluon, {-153, -180,  304,  385}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -1137, 1137}, {}};
         ev.incoming[1] = {gluon, {   0,    0, 2103, 2103}, {}};
         return ev;
       case 1:
         ev.outgoing.push_back({gluon, { 242,  241, -182,  387}, {}});
         ev.outgoing.push_back({higgs, { 243,  238, -190,  409}, {}});
         ev.outgoing.push_back({gluon, {-218, -215,  -74,  315}, {}});
         ev.outgoing.push_back({gluon, {-224, -224,  112,  336}, {}});
         ev.outgoing.push_back({gluon, { 241,  182,  154,  339}, {}});
         ev.outgoing.push_back({gluon, { -53, -234,  126,  271}, {}});
         ev.outgoing.push_back({gluon, {-231,   12,  156,  279}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -1117, 1117}, {}};
         ev.incoming[1] = {gluon, {   0,    0, 1219, 1219}, {}};
         return ev;
       case 2:
         ev.outgoing.push_back({gluon, { 151,  102,  -42,  187}, {}});
         ev.outgoing.push_back({gluon, { -86,  -46,  -17,   99}, {}});
         ev.outgoing.push_back({higgs, { 152,  153,    0,  249}, {}});
         ev.outgoing.push_back({gluon, { -60, -135,   64,  161}, {}});
         ev.outgoing.push_back({gluon, { 150,  123,  110,  223}, {}});
         ev.outgoing.push_back({gluon, {-154,  -49,   98,  189}, {}});
         ev.outgoing.push_back({gluon, {-153, -148,  144,  257}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -504,  504}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  861,  861}, {}};
         return ev;
       case 3:
         ev.outgoing.push_back({gluon, { 198,  197,  -66,  287}, {}});
         ev.outgoing.push_back({gluon, {-198, -189,  -54,  279}, {}});
         ev.outgoing.push_back({gluon, {-200,  -64,    2,  210}, {}});
         ev.outgoing.push_back({higgs, { 199,  158,    6,  283}, {}});
         ev.outgoing.push_back({gluon, {-199, -184,  172,  321}, {}});
         ev.outgoing.push_back({gluon, { 196,  168,  177,  313}, {}});
         ev.outgoing.push_back({gluon, {   4,  -86,   92,  126}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -745,  745}, {}};
         ev.incoming[1] = {gluon, {   0,    0, 1074, 1074}, {}};
         return ev;
       case 4:
         ev.outgoing.push_back({gluon, { 151,  102,  -42,  187}, {}});
         ev.outgoing.push_back({gluon, { -86, -133,  -14,  159}, {}});
         ev.outgoing.push_back({gluon, {-154, -104,   -8,  186}, {}});
         ev.outgoing.push_back({gluon, { -60,   11,    0,   61}, {}});
         ev.outgoing.push_back({higgs, { 152,  153,    0,  249}, {}});
         ev.outgoing.push_back({gluon, { 150,  125,   90,  215}, {}});
         ev.outgoing.push_back({gluon, {-153, -154,  126,  251}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -578,  578}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  730,  730}, {}};
         return ev;
       case 5:
         ev.outgoing.push_back({gluon, { -15,  -90,  -94,  131}, {}});
         ev.outgoing.push_back({gluon, { -11,   82,  -74,  111}, {}});
         ev.outgoing.push_back({gluon, {  23,  -80,  -64,  105}, {}});
         ev.outgoing.push_back({gluon, { -48,  -25,  -36,   65}, {}});
         ev.outgoing.push_back({gluon, { -12,   99,  -16,  101}, {}});
         ev.outgoing.push_back({higgs, {  68,   92,  -18,  170}, {}});
         ev.outgoing.push_back({gluon, {  -5,  -78,   54,   95}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -513,  513}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  265,  265}, {}};
         return ev;
       case 6:
         ev.outgoing.push_back({gluon, { 198,  197,  -66,  287}, {}});
         ev.outgoing.push_back({gluon, {   4,  -84,  -18,   86}, {}});
         ev.outgoing.push_back({gluon, {-198,  -60,  -36,  210}, {}});
         ev.outgoing.push_back({gluon, { 196,  -78,  -36,  214}, {}});
         ev.outgoing.push_back({gluon, {-200,   45,    0,  205}, {}});
         ev.outgoing.push_back({gluon, {-199, -178,    2,  267}, {}});
         ev.outgoing.push_back({higgs, { 199,  158,    6,  283}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -850,  850}, {}};
         ev.incoming[1] = {gluon, {   0,    0,  702,  702}, {}};
         return ev;
       default:
         ev.outgoing.push_back({gluon, {-350, -112, -280,  462}, {}});
         ev.outgoing.push_back({gluon, { 347,  266, -322,  543}, {}});
         ev.outgoing.push_back({gluon, {-349, -314,  -38,  471}, {}});
         ev.outgoing.push_back({gluon, { 349,  348,   12,  493}, {}});
         ev.outgoing.push_back({gluon, {-342,  -54,   23,  347}, {}});
         ev.outgoing.push_back({gluon, { 345, -134,  138,  395}, {}});
         ev.incoming[0] = {gluon, {   0,    0, -1589, 1589}, {}};
         ev.incoming[1] = {gluon, {   0,    0, 1122, 1122}, {}};
         return ev;
       }
     }
     if(njet == 7){
       switch(pos_boson){
         case -1: // jet idx: -1 0 1 2 3 4 5
           ev.outgoing.push_back({gluon, { -11,  -18,  -42,   47}, {}});
           ev.outgoing.push_back({gluon, { -15,   26,  -18,   35}, {}});
           ev.outgoing.push_back({gluon, {  68,   87,  -24,  113}, {}});
           ev.outgoing.push_back({gluon, {  23,  -54,   -6,   59}, {}});
           ev.outgoing.push_back({gluon, {  -5,  -44,    8,   45}, {}});
           ev.outgoing.push_back({gluon, { -48,  -96,   44,  116}, {}});
           ev.outgoing.push_back({gluon, { -12,   99,   88,  133}, {}});
           ev.incoming[0] = {gluon, {   0,    0, -249,  249}, {}};
           ev.incoming[1] = {gluon, {   0,    0,  299,  299}, {}};
           return ev;
         case -2: // jet idx: 0 1 2 3 4 -1 -1
           ev.outgoing.push_back({gluon, {  23,  -80,  -64,  105}, {}});
           ev.outgoing.push_back({gluon, {  -5,  -84,  -12,   85}, {}});
           ev.outgoing.push_back({gluon, {  68,   87,   24,  113}, {}});
           ev.outgoing.push_back({gluon, { -12,   99,   88,  133}, {}});
           ev.outgoing.push_back({gluon, { -48,  -24,   62,   82}, {}});
           ev.outgoing.push_back({gluon, { -11,  -18,   42,   47}, {}});
           ev.outgoing.push_back({gluon, { -15,   20,   60,   65}, {}});
           ev.incoming[0] = {gluon, {   0,    0, -215,  215}, {}};
           ev.incoming[1] = {gluon, {   0,    0,  415,  415}, {}};
           return ev;
         case -3: // jet idx: 0 0 1 2 3 4 5
           ev.outgoing.push_back({gluon, {  -5,  -86,  -70,  111}, {}});
           ev.outgoing.push_back({gluon, { -15,  -52,  -36,   65}, {}});
           ev.outgoing.push_back({gluon, { -12,   99,  -44,  109}, {}});
           ev.outgoing.push_back({gluon, { -48,  -60,    5,   77}, {}});
           ev.outgoing.push_back({gluon, { -11,   92,    8,   93}, {}});
           ev.outgoing.push_back({gluon, {  68,   87,   24,  113}, {}});
           ev.outgoing.push_back({gluon, {  23,  -80,   64,  105}, {}});
           ev.incoming[0] = {gluon, {   0,    0, -361,  361}, {}};
           ev.incoming[1] = {gluon, {   0,    0,  312,  312}, {}};
           return ev;
         case -4: // jet idx: 0 1 2 3 4 5 5
           ev.outgoing.push_back({gluon, {  -5,  -40,  -56,   69}, {}});
           ev.outgoing.push_back({gluon, { -12,   99,  -88,  133}, {}});
           ev.outgoing.push_back({gluon, {  23,  -84,  -72,  113}, {}});
           ev.outgoing.push_back({gluon, { -11,   92,    8,   93}, {}});
           ev.outgoing.push_back({gluon, {  68,   87,   24,  113}, {}});
           ev.outgoing.push_back({gluon, { -15,  -58,   30,   67}, {}});
           ev.outgoing.push_back({gluon, { -48,  -96,   96,  144}, {}});
           ev.incoming[0] = {gluon, {   0,    0, -395,  395}, {}};
           ev.incoming[1] = {gluon, {   0,    0,  337,  337}, {}};
           return ev;
         case -5: // jet idx: 0 1 -1 -1 2 3 4
           ev.outgoing.push_back({gluon, {  23,  -64,  -80,  105}, {}});
           ev.outgoing.push_back({gluon, { -12,   99,  -16,  101}, {}});
           ev.outgoing.push_back({gluon, { -15,   20,    0,   25}, {}});
           ev.outgoing.push_back({gluon, { -11,  -10,    2,   15}, {}});
           ev.outgoing.push_back({gluon, {  68,   87,   24,  113}, {}});
           ev.outgoing.push_back({gluon, { -48,  -72,   54,  102}, {}});
           ev.outgoing.push_back({gluon, {  -5,  -60,   48,   77}, {}});
           ev.incoming[0] = {gluon, {   0,    0, -253,  253}, {}};
           ev.incoming[1] = {gluon, {   0,    0,  285,  285}, {}};
           return ev;
         case -6: // jet idx: 0 0 0 1 2 2 3
           ev.outgoing.push_back({gluon, {  -5,  -60,  -48,   77}, {}});
           ev.outgoing.push_back({gluon, { -15,  -52,  -36,   65}, {}});
           ev.outgoing.push_back({gluon, { -48,  -96,  -58,  122}, {}});
           ev.outgoing.push_back({gluon, {  68,   87,  -24,  113}, {}});
           ev.outgoing.push_back({gluon, { -12,   99,  -16,  101}, {}});
           ev.outgoing.push_back({gluon, { -11,   92,    8,   93}, {}});
           ev.outgoing.push_back({gluon, {  23,  -70,   14,   75}, {}});
           ev.incoming[0] = {gluon, {   0,    0, -403,  403}, {}};
           ev.incoming[1] = {gluon, {   0,    0,  243,  243}, {}};
           return ev;
         case -7: // jet idx: 0 1 1 2 2 3 4
           ev.outgoing.push_back({gluon, {  23,  -46,  -46,   69}, {}});
           ev.outgoing.push_back({gluon, { -15,  -90,  -70,  115}, {}});
           ev.outgoing.push_back({gluon, {  -5,  -78,  -54,   95}, {}});
           ev.outgoing.push_back({gluon, { -11,   88,  -28,   93}, {}});
           ev.outgoing.push_back({gluon, { -12,   99,  -16,  101}, {}});
           ev.outgoing.push_back({gluon, { -48,  -60,    5,   77}, {}});
           ev.outgoing.push_back({gluon, {  68,   87,   24,  113}, {}});
           ev.incoming[0] = {gluon, {   0,    0, -424,  424}, {}};
           ev.incoming[1] = {gluon, {   0,    0,  239,  239}, {}};
           return ev;
         case -8: // jet idx: 0 1 2 2 2 3 4
           ev.outgoing.push_back({gluon, {  23,  -84,  -84,  121}, {}});
           ev.outgoing.push_back({gluon, { -11,   92,   -8,   93}, {}});
           ev.outgoing.push_back({gluon, { -15,  -36,    0,   39}, {}});
           ev.outgoing.push_back({gluon, {  -5,  -62,   10,   63}, {}});
           ev.outgoing.push_back({gluon, { -48,  -96,   19,  109}, {}});
           ev.outgoing.push_back({gluon, {  68,   87,   24,  113}, {}});
           ev.outgoing.push_back({gluon, { -12,   99,   88,  133}, {}});
           ev.incoming[0] = {gluon, {   0,    0, -311,  311}, {}};
           ev.incoming[1] = {gluon, {   0,    0,  360,  360}, {}};
           return ev;
         case -9: // jet idx: 0 1 2 1 3 0 4
           ev.outgoing.push_back({gluon, { -12,   99,  -44,  109}, {}});
           ev.outgoing.push_back({gluon, { -48,  -80,  -30,   98}, {}});
           ev.outgoing.push_back({gluon, {  68,   87,  -24,  113}, {}});
           ev.outgoing.push_back({gluon, { -15,  -90,  -18,   93}, {}});
           ev.outgoing.push_back({gluon, {  23,  -70,  -14,   75}, {}});
           ev.outgoing.push_back({gluon, { -11,   92,   -8,   93}, {}});
           ev.outgoing.push_back({gluon, {  -5,  -38,   50,   63}, {}});
           ev.incoming[0] = {gluon, {   0,    0, -366,  366}, {}};
           ev.incoming[1] = {gluon, {   0,    0,  278,  278}, {}};
           return ev;
         case -10: // jet idx: 0 1 3 2 4 3 1
           ev.outgoing.push_back({gluon, {  23,  -80,  -64,  105}, {}});
           ev.outgoing.push_back({gluon, { -12,   99,  -44,  109}, {}});
           ev.outgoing.push_back({gluon, { -15,  -60,  -20,   65}, {}});
           ev.outgoing.push_back({gluon, { -48,  -54,  -16,   74}, {}});
           ev.outgoing.push_back({gluon, {  68,   87,  -24,  113}, {}});
           ev.outgoing.push_back({gluon, {  -5,  -84,  -12,   85}, {}});
           ev.outgoing.push_back({gluon, { -11,   92,   -8,   93}, {}});
           ev.incoming[0] = {gluon, {   0,    0, -416,  416}, {}};
           ev.incoming[1] = {gluon, {   0,    0,  228,  228}, {}};
           return ev;
         case -11: // jet idx: 0 1 2 3 3 4 2
           ev.outgoing.push_back({gluon, { -48,  -56,  -48,   88}, {}});
           ev.outgoing.push_back({gluon, {  68,   87,  -24,  113}, {}});
           ev.outgoing.push_back({gluon, {  -5,  -62,  -10,   63}, {}});
           ev.outgoing.push_back({gluon, { -11,   92,    8,   93}, {}});
           ev.outgoing.push_back({gluon, { -12,   99,   16,  101}, {}});
           ev.outgoing.push_back({gluon, {  23,  -70,   14,   75}, {}});
           ev.outgoing.push_back({gluon, { -15,  -90,   18,   93}, {}});
           ev.incoming[0] = {gluon, {   0,    0, -326,  326}, {}};
           ev.incoming[1] = {gluon, {   0,    0,  300,  300}, {}};
           return ev;
         case -12: // jet idx: 0 1 0 2 3 4 5
           ev.outgoing.push_back({gluon, { -15,  -58,  -30,   67}, {}});
           ev.outgoing.push_back({gluon, {  68,   87,  -24,  113}, {}});
           ev.outgoing.push_back({gluon, { -48,  -96,  -19,  109}, {}});
           ev.outgoing.push_back({gluon, {  23,  -54,   -6,   59}, {}});
           ev.outgoing.push_back({gluon, { -11,   92,   -8,   93}, {}});
           ev.outgoing.push_back({gluon, { -12,   99,   88,  133}, {}});
           ev.outgoing.push_back({gluon, {  -5,  -70,   86,  111}, {}});
           ev.incoming[0] = {gluon, {   0,    0, -299,  299}, {}};
           ev.incoming[1] = {gluon, {   0,    0,  386,  386}, {}};
           return ev;
         case -13: // jet idx: 0 1 2 2 2 3 0
           ev.outgoing.push_back({gluon, { -11,   88,  -28,   93}, {}});
           ev.outgoing.push_back({gluon, {  68,   87,  -24,  113}, {}});
           ev.outgoing.push_back({gluon, { -48,  -84,  -21,   99}, {}});
           ev.outgoing.push_back({gluon, { -15,  -90,  -18,   93}, {}});
           ev.outgoing.push_back({gluon, {  -5,  -30,   -6,   31}, {}});
           ev.outgoing.push_back({gluon, {  23,  -70,  -14,   75}, {}});
           ev.outgoing.push_back({gluon, { -12,   99,  -16,  101}, {}});
           ev.incoming[0] = {gluon, {   0,    0, -366,  366}, {}};
           ev.incoming[1] = {gluon, {   0,    0,  239,  239}, {}};
           return ev;
       }
     }
     throw HEJ::unknown_option{"unkown process"};
   }
 
   bool couple_quark(std::string const & boson, std::string & quark){
     if(abs(HEJ::to_ParticleID(boson)) == HEJ::ParticleID::Wp){
       auto qflav{ HEJ::to_ParticleID(quark) };
       if(!HEJ::is_anyquark(qflav)) return false;
       const int W_charge = HEJ::to_ParticleID(boson)>0?1:-1;
       if(W_charge*qflav < 0 && !(abs(qflav)%2)) return false; // not anti-down
       if(W_charge*qflav > 0 &&  (abs(qflav)%2)) return false; // not up
       quark=std::to_string(qflav-W_charge);
     }
     return true;
   }
 
   // create event corresponding from given Configuration
   // overwrite_boson to force a specific boson position, indepentent from input
   // (useful for njet == 7)
   HEJ::Event parse_configuration(
       std::array<std::string,2> const & in, std::vector<std::string> const & out,
       int const overwrite_boson = 0
   ){
     auto boson = std::find_if(out.cbegin(), out.cend(),
       [](std::string id){ return !HEJ::is_parton(HEJ::to_ParticleID(id)); });
     int const pos_boson = (overwrite_boson!=0)?overwrite_boson:
       ((boson == out.cend())?-1:std::distance(out.cbegin(), boson));
 
     size_t njets = out.size();
     if(boson != out.cend()) --njets;
 
     HEJ::Event::EventData ev{get_process(njets, pos_boson)};
     ASSERT((pos_boson<0) || (ev.outgoing[pos_boson].type == HEJ::ParticleID::higgs));
     for(size_t i=0; i<out.size(); ++i){
       ev.outgoing[i].type = HEJ::to_ParticleID(out[i]);
     }
     for(size_t i=0; i<in.size(); ++i){
       ev.incoming[i].type = HEJ::to_ParticleID(in[i]);
     }
     shuffle_particles(ev);
 
     return ev.cluster(jet_def, min_jet_pt);
   }
 
   bool match_expectation( HEJ::event_type::EventType expected,
     std::array<std::string,2> const & in, std::vector<std::string> const & out,
       int const overwrite_boson = 0
   ){
     HEJ::Event ev{parse_configuration(in,out,overwrite_boson)};
     if(ev.type() != expected){
       std::cerr << "Expected type " << HEJ::event_type::name(expected)
                 << " but found " << HEJ::event_type::name(ev.type()) << "\n" << ev;
       auto jet_idx{ ev.particle_jet_indices(ev.jets()) };
       std::cout << "Particle Jet indices: ";
       for(int const i: jet_idx)
         std::cout << i << " ";
       std::cout << std::endl;
       return false;
     }
     return true;
   }
 
   bool check_fkl(){
     using namespace HEJ;
     for(std::string const & first: all_partons)       // all quark flavours
       for(std::string const & last: all_partons){
         for(int njet=2; njet<=6; ++njet){             // all multiplicities
           if(njet==5) continue;
           std::array<std::string,2> base_in{first,last};
           std::vector<std::string> base_out(njet, "g");
           base_out.front() = first;
           base_out.back() = last;
           if(!match_expectation(event_type::FKL, base_in, base_out))
             return false;
           for(auto const & boson: all_bosons)         // any boson
             for(int pos=0; pos<=njet; ++pos){         // at any position
               auto in{base_in};
               auto out{base_out};
               // change quark flavours for W
               const bool couple_idx = std::uniform_int_distribution<int>{0,1}(ran);
               if(!couple_quark(boson, couple_idx?out.back():out.front()))
                 continue;
               out.insert(out.begin()+pos, boson);
               if(!match_expectation(event_type::FKL, in, out))
                 return false;
             }
         }
         for(int i=-3; i>-13;--i){ // extremal parton inside jet
           std::array<std::string,2> base_in{first,last};
           std::vector<std::string> base_out(7, "g");
           base_out.front() = first;
           base_out.back() = last;
           if(!match_expectation(event_type::FKL, base_in, base_out, i))
             return false;
         }
       }
     return true;
   }
 
   bool check_uno(){
     using namespace HEJ;
     auto const b{ event_type::unob };
     auto const f{ event_type::unof };
     for(std::string const & uno: all_quarks)          // all quark flavours
       for(std::string const & fkl: all_partons){
         for(int njet=3; njet<=6; ++njet){             // all multiplicities >2
           if(njet==5) continue;
           for(int i=0; i<2; ++i){                     // forward & backwards
             std::array<std::string,2> base_in;
             std::vector<std::string> base_out(njet, "g");
             const int uno_pos = i?1:(njet-2);
             const int fkl_pos = i?(njet-1):0;
             base_in[i?0:1] = uno;
             base_in[i?1:0] = fkl;
             base_out[uno_pos] = uno;
             base_out[fkl_pos] = fkl;
             auto expectation{ i?b:f };
             if( !match_expectation(expectation, base_in, base_out) )
               return false;
             for(auto const & boson: all_bosons){      // any boson
               // at any position (higgs only inside FKL chain)
               int start = 0;
               int end = njet;
               if(to_ParticleID(boson) == pid::higgs){
                 start = i?(uno_pos+1):fkl_pos;
                 end = i?(fkl_pos+1):uno_pos;
               }
               for(int pos=start; pos<=end; ++pos){
                 auto in{base_in};
                 auto out{base_out};
                 // change quark flavours for W
                 const bool couple_idx = std::uniform_int_distribution<int>{0,1}(ran);
                 if(!couple_quark(boson, couple_idx?out[fkl_pos]:out[uno_pos]))
                   continue;
                 out.insert(out.begin()+pos, boson);
                 if(!match_expectation(expectation, in, out))
                   return false;
               }
             }
           }
         }
         // test allowed jet configurations
         if(!(match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -3)
           && match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -4)
           && match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -5)
           && match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -5)
           && match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -6)
           && match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -7)
           && match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -7)
           && match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -8)
           && match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -8)
           && match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -9)
           && match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -10)
           && match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -11)
           && match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -11)
           && match_expectation(f,{fkl,uno},{fkl,"g","g","g","g",uno,"g"}, -12)
           && match_expectation(b,{uno,fkl},{"g",uno,"g","g","g","g",fkl}, -12)
           ))
           return false;
       }
     return true;
   }
 
   bool check_extremal_qqx(){
     using namespace HEJ;
     auto const b{ event_type::qqxexb };
     auto const f{ event_type::qqxexf };
     for(std::string const & qqx: all_quarks)          // all quark flavours
       for(std::string const & fkl: all_partons){
         std::string const qqx2{ std::to_string(HEJ::to_ParticleID(qqx)*-1) };
         for(int njet=3; njet<=6; ++njet){             // all multiplicities >2
           if(njet==5) continue;
           for(int i=0; i<2; ++i){                     // forward & backwards
             std::array<std::string,2> base_in;
             std::vector<std::string> base_out(njet, "g");
             const int qqx_pos = i?0:(njet-2);
             const int fkl_pos = i?(njet-1):0;
             base_in[i?0:1] = "g";
             base_in[i?1:0] = fkl;
             base_out[fkl_pos]   = fkl;
             base_out[qqx_pos]   = qqx;
             base_out[qqx_pos+1] = qqx2;
             auto expectation{ i?b:f };
             if( !match_expectation(expectation, base_in, base_out) )
               return false;
             for(auto const & boson: all_bosons){      // any boson
               // at any position (higgs only inside FKL chain)
               int start = 0;
               int end = njet;
               if(to_ParticleID(boson) == pid::higgs){
                 start = i?(qqx_pos+2):fkl_pos;
                 end = i?(fkl_pos+1):qqx_pos;
               }
               for(int pos=start; pos<=end; ++pos){
                 auto in{base_in};
                 auto out{base_out};
                 // change quark flavours for W
                 const bool couple_idx = std::uniform_int_distribution<int>{0,1}(ran);
                 if(couple_idx || !couple_quark(boson, out[fkl_pos]) ){
                   // (randomly) try couple to FKL, else fall-back to qqx
                   if(!couple_quark(boson, out[qqx_pos]))
                     couple_quark(boson, out[qqx_pos+1]);
                 }
                 out.insert(out.begin()+pos, boson);
                 if(!match_expectation(expectation, in, out))
                   return false;
               }
             }
           }
         }
         // test allowed jet configurations
         if(!(match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -3)
           && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -4)
           && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -5)
           && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -5)
           && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -6)
           && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -7)
           && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -7)
           && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -8)
           && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -8)
           && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -9)
           && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -10)
           && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -11)
           && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -11)
           && match_expectation(f,{fkl,"g"},{fkl,"g","g","g","g",qqx,qqx2}, -12)
           && match_expectation(b,{"g",fkl},{qqx,qqx2,"g","g","g","g",fkl}, -12)
           ))
           return false;
       }
     return true;
   }
 
   bool check_central_qqx(){
     using namespace HEJ;
     auto const t{ event_type::qqxmid };
     for(std::string const & qqx: all_quarks)        // all quark flavours
       for(std::string const & fkl1: all_partons)
         for(std::string const & fkl2: all_partons){
           std::string const qqx2{ std::to_string(HEJ::to_ParticleID(qqx)*-1) };
           for(int njet=4; njet<=6; ++njet){                 // all multiplicities >3
             if(njet==5) continue;
             for(int qqx_pos=1; qqx_pos<njet-2; ++qqx_pos){ // any qqx position
               std::array<std::string,2> base_in;
               std::vector<std::string> base_out(njet, "g");
               base_in[0] = fkl1;
               base_in[1] = fkl2;
               base_out.front()    = fkl1;
               base_out.back()     = fkl2;
               base_out[qqx_pos]   = qqx;
               base_out[qqx_pos+1] = qqx2;
               if( !match_expectation(t, base_in, base_out) )
                 return false;
               for(auto const & boson: all_bosons)         // any boson
                 for(int pos=0; pos<=njet; ++pos){         // at any position
                   if( to_ParticleID(boson) == pid::higgs
                     && (pos==qqx_pos || pos==qqx_pos+1) )
                     continue;
                   auto in{base_in};
                   auto out{base_out};
                   // change quark flavours for W
                   const int couple_idx{ std::uniform_int_distribution<int>{0,2}(ran) };
                   // (randomly) try couple to FKL, else fall-back to qqx
                   if( couple_idx == 0 && couple_quark(boson, out.front()) ){}
                   else if( couple_idx == 1 && couple_quark(boson, out.back()) ){}
                   else {
                     if(!couple_quark(boson, out[qqx_pos]))
                       couple_quark(boson, out[qqx_pos+1]);
                   }
                   out.insert(out.begin()+pos, boson);
                   if(!match_expectation(t, in, out))
                     return false;
                 }
             }
           }
           // test allowed jet configurations (non exhaustive collection)
           if(!(match_expectation(t,{fkl1,fkl2},{fkl1,"g",qqx,qqx2,"g","g",fkl2}, -3)
             && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -3)
             && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -4)
             && match_expectation(t,{fkl1,fkl2},{fkl1,qqx,qqx2,"g","g","g",fkl2}, -4)
             && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -5)
             && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -6)
             && match_expectation(t,{fkl1,fkl2},{fkl1,"g",qqx,qqx2,"g","g",fkl2}, -7)
             && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -7)
             && match_expectation(t,{fkl1,fkl2},{fkl1,qqx,qqx2,"g","g","g",fkl2}, -8)
             && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -8)
             && match_expectation(t,{fkl1,fkl2},{fkl1,qqx,qqx2,"g","g","g",fkl2}, -9)
             && match_expectation(t,{fkl1,fkl2},{fkl1,"g",qqx,qqx2,"g","g",fkl2}, -9)
             && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -10)
             && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -10)
             && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -11)
             && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g",qqx,qqx2,"g",fkl2}, -12)
             && match_expectation(t,{fkl1,fkl2},{fkl1,"g","g","g",qqx,qqx2,fkl2}, -12)
             ))
             return false;
         }
     return true;
   }
 
   // this checks a (non excessive) list of non-resummable states
   bool check_non_resummable(){
     auto type{ HEJ::event_type::non_resummable};
     return
       // 2j - crossing lines
          match_expectation(type, {"g","2"},  {"2","g"})
       && match_expectation(type, {"-1","g"}, {"g","-1"})
       && match_expectation(type, {"1","-1"}, {"-1","1"})
       && match_expectation(type, {"g","2"},  {"2","g","h"})
       && match_expectation(type, {"1","2"},  {"2","h","1"})
       && match_expectation(type, {"1","-1"}, {"h","-1","1"})
       && match_expectation(type, {"g","2"},  {"Wp","1","g"})
       && match_expectation(type, {"1","-1"}, {"-2","Wp","1"})
       && match_expectation(type, {"4","g"},  {"g","3","Wp"})
       && match_expectation(type, {"1","-2"}, {"-1","Wm","1"})
       && match_expectation(type, {"g","3"},  {"4","g","Wm"})
       && match_expectation(type, {"1","3"},  {"Wm","4","1"})
       // 2j - qqx
       && match_expectation(type, {"g","g"},  {"1","-1"})
       && match_expectation(type, {"g","g"},  {"-2","2","h"})
       && match_expectation(type, {"g","g"},  {"-4","Wp","3"})
       && match_expectation(type, {"g","g"},  {"Wm","-1","2"})
       // 3j - crossing lines
       && match_expectation(type, {"g","4"},  {"4","g","g"})
       && match_expectation(type, {"-1","g"}, {"g","g","-1"})
       && match_expectation(type, {"1","3"},  {"3","g","1"})
       && match_expectation(type, {"-2","2"}, {"2","g","-2","h"})
       && match_expectation(type, {"-3","g"}, {"g","g","Wp","-4"})
       && match_expectation(type, {"1","-2"}, {"Wm","-1","g","1"})
       && match_expectation(type, {"-1","g"}, {"1","-1","-1"})
       // higgs inside uno
       && match_expectation(type, {"-1","g"}, {"g","h","-1","g"})
       && match_expectation(type, {"-1","1"}, {"g","h","-1","1"})
       && match_expectation(type, {"g","2"},  {"g","2","h","g"})
       && match_expectation(type, {"-1","1"}, {"-1","1","h","g"})
       // higgs outside uno
       && match_expectation(type, {"-1","g"}, {"h","g","-1","g"})
       && match_expectation(type, {"-1","1"}, {"-1","1","g","h"})
       // higgs inside qqx
       && match_expectation(type, {"g","g"}, {"-1","h","1","g","g"})
       && match_expectation(type, {"g","g"}, {"g","-1","h","1","g"})
       && match_expectation(type, {"g","g"}, {"g","g","2","h","-2"})
       // higgs outside qqx
       && match_expectation(type, {"g","g"}, {"h","-1","1","g","g"})
       && match_expectation(type, {"g","g"}, {"g","g","2","-2","h"})
       // 4j - two uno
       && match_expectation(type, {"-2","2"}, {"g","-2","2","g"})
       && match_expectation(type, {"1","3"},  {"g","1","h","3","g"})
       && match_expectation(type, {"1","2"},  {"g","1","3","Wp","g"})
       && match_expectation(type, {"1","-2"}, {"g","Wm","1","-1","g"})
       // 4j - two gluon outside
       && match_expectation(type, {"g","4"},  {"g","4","g","g"})
       && match_expectation(type, {"1","3"},  {"1","3","h","g","g"})
       && match_expectation(type, {"1","2"},  {"1","3","g","Wp","g"})
       && match_expectation(type, {"1","-2"}, {"1","Wm","-1","g","g"})
       && match_expectation(type, {"-1","g"}, {"g","g","-1","g"})
       && match_expectation(type, {"1","3"},  {"g","g","1","3","h"})
       && match_expectation(type, {"1","2"},  {"g","g","1","Wp","3"})
       && match_expectation(type, {"1","-2"}, {"Wm","g","g","1","-1"})
       // 4j - ggx+uno
       && match_expectation(type, {"g","4"},  {"1","-1","4","g"})
       && match_expectation(type, {"2","g"},  {"g","2","-3","3"})
       && match_expectation(type, {"g","4"},  {"1","-1","h","4","g"})
       && match_expectation(type, {"2","g"},  {"g","2","-3","3","h"})
       && match_expectation(type, {"g","4"},  {"Wp","1","-1","3","g"})
       && match_expectation(type, {"2","g"},  {"g","2","-4","Wp","3"})
       && match_expectation(type, {"g","4"},  {"2","Wm","-1","4","g"})
       && match_expectation(type, {"2","g"},  {"g","2","Wp","-3","4"})
       // 3j - crossing+uno
       && match_expectation(type, {"1","4"},  {"g","4","1"})
       && match_expectation(type, {"1","4"},  {"4","1","g"})
       && match_expectation(type, {"1","4"},  {"g","h","4","1"})
       && match_expectation(type, {"-1","-3"},{"Wm","g","-4","-1"})
       && match_expectation(type, {"1","4"},  {"3","1","Wp","g"})
       && match_expectation(type, {"1","4"},  {"3","1","g","h"})
       // 3j - crossing+qqx
       && match_expectation(type, {"1","g"},  {"-1","1","g","1"})
       && match_expectation(type, {"1","g"},  {"-1","1","1","g"})
       && match_expectation(type, {"g","1"},  {"1","g","1","-1"})
       && match_expectation(type, {"g","1"},  {"g","1","1","-1"})
       && match_expectation(type, {"1","g"},  {"2","-2","g","1"})
       && match_expectation(type, {"1","g"},  {"2","-2","1","g"})
       && match_expectation(type, {"g","1"},  {"1","g","-2","2"})
       && match_expectation(type, {"g","1"},  {"g","1","-2","2"})
       && match_expectation(type, {"1","g"},  {"-1","1","h","g","1"})
       && match_expectation(type, {"1","g"},  {"-1","h","1","1","g"})
       && match_expectation(type, {"g","1"},  {"1","g","1","h","-1"})
       && match_expectation(type, {"g","1"},  {"h","g","1","1","-1"})
       && match_expectation(type, {"1","g"},  {"2","-2","1","g","h"})
       && match_expectation(type, {"g","1"},  {"g","h","1","-2","2"})
       && match_expectation(type, {"1","g"},  {"Wp","3","-4","g","1"})
       && match_expectation(type, {"3","g"},  {"-2","Wm","1","3","g"})
       && match_expectation(type, {"g","1"},  {"1","g","Wm","-3","4"})
       && match_expectation(type, {"g","-3"},  {"g","-3","-1","Wp","2"})
       // 4j- gluon in qqx
       && match_expectation(type, {"g","1"},  {"1","g","-1","1"})
       && match_expectation(type, {"1","g"},  {"1","-1","g","1"})
       && match_expectation(type, {"g","1"},  {"1","g","Wm","-2","1"})
       && match_expectation(type, {"2","g"},  {"2","-2","g","Wp","1"})
       && match_expectation(type, {"g","g"},  {"Wp","3","g","-4","g"})
       && match_expectation(type, {"1","g"},  {"1","h","-1","g","1"})
       // 6j - two qqx
       && match_expectation(type, {"g","g"},  {"1","-1","g","g","1","-1"})
       && match_expectation(type, {"g","g"},  {"1","-1","g","1","-1","g"})
       && match_expectation(type, {"g","g"},  {"g","1","-1","g","1","-1"})
       && match_expectation(type, {"g","g"},  {"g","1","-1","1","-1","g"})
       && match_expectation(type, {"g","g"},  {"g","1","1","-1","-1","g"})
       && match_expectation(type, {"g","g"},  {"h","1","-1","g","g","1","-1"})
       && match_expectation(type, {"g","g"},  {"1","Wp","-2","g","1","-1","g"})
       && match_expectation(type, {"g","g"},  {"g","1","Wp","-1","g","1","-2"})
       && match_expectation(type, {"g","g"},  {"g","1","-1","Wm","2","-1","g"})
       && match_expectation(type, {"g","g"},  {"g","1","2","-1","Wm","-1","g"})
       // random stuff (can be non-physical)
       && match_expectation(type, {"g","g"},  {"1","-2","2","-1"}) // != 2 qqx
       && match_expectation(type, {"g","g"},  {"1","-2","2","g"})  // could be qqx
       && match_expectation(type, {"e+","e-"},{"1","-1"})          // bad initial state
       && match_expectation(type, {"1","e-"}, {"g","1","Wm"})      // bad initial state
       && match_expectation(type, {"h","g"},  {"g","g"})           // bad initial state
       && match_expectation(type, {"-1","g"}, {"-1","1","1"})      // bad qqx
       && match_expectation(type, {"-1","g"}, {"1","1","-1"})      // crossing in bad qqx
       && match_expectation(type, {"-1","g"}, {"-2","1","1","Wp"}) // bad qqx
       && match_expectation(type, {"1","2"},  {"1","-1","g","g","g","2"})  // bad qqx
       && match_expectation(type, {"1","2"},  {"1","-1","-2","g","g","2"}) // gluon in bad qqx
       && match_expectation(type, {"g","g"},  {"-1","2","g","g"}) // wrong back qqx
       && match_expectation(type, {"g","g"},  {"g","g","2","1"}) // wrong forward qqx
       && match_expectation(type, {"g","g"},  {"g","-2","1","g"}) // wrong central qqx
       ;
   }
 
   // Events failing the jet requirements, e.g. qqx inside one jet
   //! @FIXME they are currently allowed
   //! TODO qqx currently not allow for pure jet -> need W for qqx
   bool check_illegal_jets(){
     auto type{ HEJ::event_type::non_resummable};
     return true
       // uno backward not in jet
       && match_expectation(type, {"1","g"},  {"g","1","g","g","g","g","g"}, -1)
       // & also legal uno on other side
       && match_expectation(type, {"1","1"},  {"g","1","g","g","g","1","g"}, -1)
       // qqx backward not in jet
       && match_expectation(type, {"g","2"},  {"-1","1","g","g","g","g","2"}, -1)
       // uno forward not in jet
       && match_expectation(type, {"3","3"},  {"3","g","g","g","g","3","g"}, -2)
       // qqx backward not in jet
       && match_expectation(type, {"g","g"},  {"g","g","g","g","g","-2","2"}, -2)
       // uno backward in same jet
       && match_expectation(type, {"1","g"},  {"g","1","g","g","g","g","g"}, -3)
       // & also legal uno on other side
       && match_expectation(type, {"1","1"},  {"g","1","g","g","g","1","g"}, -3)
       // qqx backward in same jet
       && match_expectation(type, {"g","2"},  {"-4","4","g","g","g","g","2"}, -3)
       // uno forward in same jet
       && match_expectation(type, {"3","2"},  {"3","g","g","g","g","2","g"}, -4)
       // qqx backward in same jet
       && match_expectation(type, {"g","g"},  {"g","g","g","g","g","-2","2"}, -4)
       // central qqx not in jet
       && match_expectation(type, {"1","2"},  {"1","g","-1","1","g","g","2"}, -5)
       // central qqx in same jet
       && match_expectation(type, {"1","2"},  {"1","-1","1","g","g","g","2"}, -6)
       // central qqx in same jet
       && match_expectation(type, {"1","2"},  {"1","g","g","g","2","-2","2"}, -6)
       // central qqx in same jet
       && match_expectation(type, {"1","2"},  {"1","-1","1","g","g","g","2"}, -7)
       // central qqx in same jet
       && match_expectation(type, {"1","2"},  {"1","g","g","3","-3","g","2"}, -7)
       // central qqx in same jet
       && match_expectation(type, {"g","3"},  {"g","g","-2","2","g","g","3"}, -8)
       // central qqx in same jet
       && match_expectation(type, {"g","-2"}, {"g","g","g","2","-2","g","-2"}, -8)
       // FKL not in own jet
       && match_expectation(type, {"1","1"},  {"1","g","g","g","g","g","1"}, -1)
       && match_expectation(type, {"g","g"},  {"g","g","g","g","g","g","g"}, -2)
       && match_expectation(type, {"1","-3"}, {"1","g","g","g","g","-3","g"}, -1)
       && match_expectation(type, {"2","g"},  {"g","2","g","g","g","g","g"}, -2)
       && match_expectation(type, {"2","g"},  {"2","g","g","g","g","2","-2"}, -1)
       && match_expectation(type, {"g","-2"}, {"4","-4","g","g","g","g","-2"}, -2)
       && match_expectation(type, {"-1","g"}, {"-1","1","-1","g","g","g","g"}, -1)
       && match_expectation(type, {"4","-3"}, {"4","g","g","1","-1","g","-3"}, -2)
+      // FKL in same jet
+      && match_expectation(type, {"1","1"},  {"1","g","g","g","g","g","1"}, -13)
+      // uno in same jet as FKL
+      && match_expectation(type, {"-1","1"}, {"-1","g","g","g","g","1","g"}, -9)
+      && match_expectation(type, {"-1","1"}, {"g","-1","g","g","g","g","1"}, -10)
+      && match_expectation(type, {"-1","1"}, {"-1","g","g","g","g","1","g"}, -13)
+      && match_expectation(type, {"-1","1"}, {"g","-1","g","g","g","g","1"}, -13)
+      // extremal qqx in same jet as FKL
+      && match_expectation(type, {"-1","g"}, {"-1","g","g","g","g","1","-1"}, -9)
+      && match_expectation(type, {"g","1"},  {"1","-1","g","g","g","g","1"}, -10)
+      && match_expectation(type, {"-1","g"}, {"-1","g","g","g","g","-1","1"}, -13)
+      && match_expectation(type, {"g","g"},  {"g","g","g","g","g","-1","1"}, -13)
+      // central qqx in same jet as FKL
+      && match_expectation(type,{"2","2"},   {"2","-2","2","g","g","g","2"}, -3)
+      && match_expectation(type,{"-1","g"},  {"-1","g","g","g","2","-2","g"}, -4)
+      && match_expectation(type,{"g","4"},   {"g","g","-4","4","g","g","4"}, -6)
+      && match_expectation(type,{"g","g"},   {"g","3","-3","g","g","g","g"}, -6)
+      && match_expectation(type,{"g","1"},   {"g","g","g","g","-2","2","1"}, -9)
+      && match_expectation(type,{"g","g"},   {"g","1","-1","g","g","g","g"}, -10)
+      && match_expectation(type,{"g","1"},   {"g","g","-2","2","g","g","1"}, -11)
+      && match_expectation(type,{"g","1"},   {"g","-2","2","g","g","g","1"}, -11)
+      && match_expectation(type,{"3","2"},   {"3","g","-1","1","g","g","2"}, -12)
+      && match_expectation(type,{"3","-2"},  {"3","-1","1","g","g","g","-2"}, -12)
+      && match_expectation(type,{"3","-2"},  {"3","-1","1","g","g","g","-2"}, -13)
       ;
   }
 
   // Two boson states, that are currently not implemented
   bool check_bad_FS(){
     auto type{ HEJ::event_type::bad_final_state};
     return
          match_expectation(type, {"g","g"},  {"g","h","h","g"})
       && match_expectation(type, {"g","g"},  {"h","g","h","g"})
       && match_expectation(type, {"g","-1"}, {"g","h","Wp","-2"})
       && match_expectation(type, {"-3","-1"},{"-4","g","Wp","Wp","-2"})
       && match_expectation(type, {"-4","-1"},{"-3","Wp","g","Wm","-2"})
       && match_expectation(type, {"-4","-1"},{"g","-3","Wp","Wm","-2"})
     ;
   }
 }
 
 int main() {
   // tests for "no false negatives"
   // i.e. all HEJ-configurations get classified correctly
   if(!check_fkl()) return EXIT_FAILURE;
   if(!check_uno()) return EXIT_FAILURE;
   if(!check_extremal_qqx()) return EXIT_FAILURE;
   if(!check_central_qqx()) return EXIT_FAILURE;
   // test for "no false positive"
   // i.e. non-resummable gives non-resummable
   if(!check_non_resummable()) return EXIT_FAILURE;
   if(!check_illegal_jets()) return EXIT_FAILURE;
   if(!check_bad_FS()) return EXIT_FAILURE;
   //! @TODO missing:
   //!   checks for partons sharing a jet
 
   return EXIT_SUCCESS;
 }