-ene -one bbbb bbeb bcbc bccc bcec bebb bebe bebo beck beeb beek been beke beko bene benk benn beno beo- beok beon bnoc bobb bobe bobo boce bock boco boec boee boen boeo boke bokn boko bonc bone bonk bonn bono boob booc booe book boon c-bo cbbc cbcc cbce cbcn cbec cbee cbkn cbko ccbc ccbn cccb cccc ccee ccnb ccnc ccne ccob ccoc cec- cece ceco ceeb ceec ceke cen- cene ceno ckbc ckbe ckck ckco cken cknb cknc ckob ckoc ckoo cnbc cnco cobb cobe cobo coce cock coco coen cok- coke coko con- conc cone conk conn cono coob cook coon ebbc ebbo ebcc eben ebno eboe ebon eboo ecbc ecbe eccb eccc ecce ecco ecko ecne eco- econ eeee eeke eeoc ekco ekeb ekek eken ekne enb- enbn ence enco enee eneo enke ennc enne eno- enoc enoe enon eone kbbb kbbc kbbe kbbk kbbo kbcb kbce kbck kbco kbeb kbec kbee kbek kben kbeo kbkb kbkk kbko kbnn kbno kbob kboc kboe kbok kbon kboo kcbc kcbk kccb kccc kcck kceb kcec kcee kceo kckc kckk kckn kcko kcnb kcno kcob kcoe kcon kebb kebc kebe kebn keck keco keek keen kekb kekc keke keko ken- kene kenk kenn keno keok keon kkbb kkbe kkbn kkbo kkcb kkck kkcn kkco kken kkkk kknb kkne kknn kkno kkob kkon kkoo knbb knbc knbe knbn kncb knce knck kncn knco kneb knec knee knek knen kneo knkk knnb knnk knob knoc knoe knok knon kobb kobc kobe kobk kobn kobo kocb kock kocn koen kokb kokc koke kokk kokn koko konc kone konk kono koob kooc kook koon kooo nbbc nbbo nbcc nbco ncbc nccc nccn ncec ncee ncen ncnc ncoc nebb nebe nebn nebo necc nece neck neco neeb neen neke neko nene neno neo- neoc neon neoo nkok nnnn nobc nobo noce nock noco noke noko non- none nonn nono noo- noob nook noon nooo o-eo obbo obec oben obkb oboe obok obon ocbc occc occn oce ocee ocke ocon oec- oecc oeec oen- oeno oken okko okno okok okon onc- once onco one- oneb onec onee onek oneo onne onno onon oobe oone oooo