-ene -one cccc ccee ccnc ccne ccoc cec- cece ceco ceec ceke cen- cene ceno ckck ckco cken cknc ckoc ckoo cnco coce cock coco coen cok- coke coko con- conc cone conk conn cono cook coon eccc ecce ecco ecko ecne eco- econ eeee eeke eeoc ekco ekek eken ekne ence enco enee eneo enke ennc enne eno- enoc enoe enon eone kccc kcck kcec kcee kceo kckc kckk kckn kcko kcno kcoe kcon keck keco keek keen kekc keke keko ken- kene kenk kenn keno keok keon kkck kkcn kkco kken kkkk kkne kknn kkno kkon kkoo knce knck kncn knco knec knee knek knen kneo knkk knnk knoc knoe knok knon kock kocn koen kokc koke kokk kokn koko konc kone konk kono kooc kook koon kooo nccc nccn ncec ncee ncen ncnc ncoc necc nece neck neco neen neke neko nene neno neo- neoc neon neoo nkok nnnn noce nock noco noke noko non- none nonn nono noo- nook noon nooo o-eo occc occn oce ocee ocke ocon oec- oecc oeec oen- oeno oken okko okno okok okon onc- once onco one- onec onee onek oneo onne onno onon oone oooo