-ene cccc cccp ccee ccgc ccnc ccne ccnp ccpe ccpn ccpp cec- cece cecp ceec cege cen- cene ceng cepc cepe cepp cgcc cgcg cncp cnep cpce cpep eccc ecce ecne ecpg ecpp eeee eeng egcc egcg egec egee egge eggp egne egpe egpn ence enee eneg enge engg ennc enne enp- epcc epec epee epen eppc eppp gc-c gccc gcpc gece geen geep gege gegg gen- genc gene geng genn gepe gggg gncc gngc gnpc gpgp nccc nccn nccp ncec ncee ncen ncep ncnc ncpc necc nece neen neep nege negp nene neng nepc nepe ngen ngpc nngn nnnn npcc nppc pccc pcce pcep pcgg pcpn pcpp pece peec peen peep pegg pen- penc pene peng penn pepe pgcc pgce pnec pnpp ppcc ppen pppn pppp