-ene -one cccc cccp ccee ccnc ccne ccnp ccoc ccpe ccpn ccpp cec- cece ceco cecp ceec ceke cen- cene ceno ceop cepc cepe cepo cepp ckck ckco cken cknc ckoc ckoo ckpc cnco cncp cnep coce cock coco cocp coen coep cok- coke coko con- conc cone conk conn cono cook coon coop cope copo copp cpce cpep eccc ecce ecco ecko ecne eco- econ ecop ecpp eeee eeke eeoc ekco ekek eken ekne ekpe ekpo ence enco enee eneo enke ennc enne eno- enoc enoe enon enp- eone epcc epec epee epen epoc epon eppc eppo eppp kccc kcck kcec kcee kceo kcep kckc kckk kckn kcko kcno kcnp kcoe kcon kcpc kcpn kcpo keck keco keek keen keep kekc keke keko ken- kene kenk kenn keno keok keon kep- kepc kepe kepn kkck kkcn kkco kken kkkk kkne kknn kkno kkon kkoo kkpc kkpk kkpn knce knck kncn knco knec knee knek knen kneo knep knkk knnk knoc knoe knok knon knop knpc kock kocn kocp koen kokc koke kokk kokn koko kokp konc kone konk kono konp kooc kook koon kooo koop kope kopn kopp kpcc kpek kpke kpkk kpnc kpne kpno kpnp kpoc kpoe kpok kpoo kpop kppc kppk kppo kppp nccc nccn nccp ncec ncee ncen ncep ncnc ncoc ncpc necc nece neck neco neen neep neke neko nene neno neo- neoc neon neoo nepc nepe nkok nnnn noce nock noco noke noko non- none nonn nono noo- nook noon nooo noop nope npcc nppc o-eo occc occn oce ocee ocke ocon ocpp oec- oecc oeec oen- oeno oken okko okno okok okon okpe okpo onc- once onco one- onec onee onek oneo onep onkp onne onno onon oone oooo opec open opep opo- opon oppo pccc pcce pcep pcoe pcpn pcpp pece peck peco peec peek peen peep peke pekk peko pen- penc pene penk penn peno peon pepe pepo pnec pnkp pnon pnpo pnpp poce pock poco poke poko ponc pone ponk pono ponp pook poon poop pop- popc pope popo popp ppcc ppen pppn pppo pppp