-ene cccc cccp ccee ccnc ccne ccnp ccpe ccpn ccpp cctc cctt cec- cece cecp cect ceec cen- cene cent cepc cepe cepp cept cet- cete cetp cncp cnep cnet cntc cpce cpep cpnt cptp ctcp ctec cten ctep ctne ctpp cttn eccc ecce ecct ecne ecpp ect- ectc eeee eent eetc eete ence enee ennc enne enp- ent- ente entp epcc epec epee epen eppc eppp epte etcc etec etee eten etne ette ettn nccc nccn nccp ncct ncec ncee ncen ncep ncnc ncpc nctc ncte necc nece nect neen neep neet nene nent nepc nepe nept net- nete nett nnnn nntn npcc nppc nptc npte nptn ntcc ntpc pccc pcce pcep pcnt pcpn pcpp pcte pece pect peec peen peep peet pen- penc pene penn pent pepe pete petn pett pnec pnet pnpp ppcc ppen pppn pppp pptn pptt ptcc pten pttc tccc tcep tcnn tctc tect teec teen teet tenc tene tenn tenp tent tepe tepp tete tett tncc tpcp tppp tpte tptp ttcn ttcp tten tttt