-ene c-cd cccc cccp ccdc ccdn ccdp cced ccee ccnc ccne ccnp ccpe ccpn ccpp cd-e cdec cdnc cec- cece cecp cedd cede ceec cen- cend cene cepc cepe cepp cncp cndd cndp cnep cpce cpep cppd dccc dccp dddd dec- decc decd dece dedd dede deed deen deep dene denn depc depe depp dnce dpcp dppc eccc ecce ecdc eced ecne ecpd ecpp eddc edde eddp ede- eden eede eeee eend ence end- ende ened enee ennc enne enp- epcc epec epee epen eppc eppp nccc nccn nccp ncdc ncdn ncec nced ncee ncen ncep ncnc ncnd ncpc ndcc ndcp ndde ndnp ndpd necc nece nedc nedd nede need neen neep nend nene nepc nepe nnnn npcc nppc nppd pccc pcce pcep pcpn pcpp pdcp pdpn pece ped- pede peec peed peen peep pen- penc pend pene penn pepd pepe pnec pnpp ppcc ppcd ppen pppd pppn pppp