-ene -yne cccc cccp ccee cche cchp cchy ccnc ccne ccnp ccny ccpe ccpn ccpp cec- cece cecp ceec cen- cene ceny cepc cepe ceph cepp chce chch chcp chec chee cheh chen chep chey chnc chpp chy- chyc chyn cncp cnep cpce cpep cyc- cycc cyen cyn- cyne cypc cyy- cyyc cyyn eccc ecce eche ecne ecpp eeee eeny ehcc eheh ehen ence ench ency enee eney ennc enne enny enp- enye epcc epch epec epee epen eph- eppc eppp eppy eyec eyen eyey eyne eype hccc hcch hcpc hech heep hehe hehn hene henh henn hepc hepe hepp heye heyh heyn hhhh hhpc hnce hnny hpcc hppe hyce hyen hyhe hyne hyp- hype hyph hypy nccc nccn nccp ncec ncee ncen ncep nchc ncnc ncpc necc nece nech necy neen neep nehe nene nenh nepc nepe neph neye neyh neyn nhcc nhnn nnnn npcc nppc nycc nyce nycy nyen nyhe nyne nyny nypc nype pccc pcce pcep pchp pcpn pcpp pece pech pecy peec peen peep pehe pen- penc pene penh penn peny pepe peyn phcc phe- phen phey pnec pnpp ppcc ppen pppn pppp ppye pyce pych pyep pyn- pyne pype pypy yccc ycch ycee yche yech yeen yeep yehe yenc yene yepe yepp yeye yhen ynce ynch ynne ypcc yyyy