-ene -one bbbb bbeb bbrc bcbc bccc bcec bcer bcor bebb bebe bebo beck beeb beek been beer beke beko bene benk benn beno beo- beok beon beor berc bere berk bern bero berr bner bnoc bnor bnrr bobb bobe bobo boce bock boco boec boee boen boeo boer boke bokn boko bonc bone bonk bonn bono boob booc booe book boon boor bor- bore bork born boro borr brcb brce breb brec bree brek bren breo brer brkb brno brob broc broe brok bron broo bror brrr c-bo cbbc cbcc cbce cbcn cbcr cbec cbee cber cbkn cbko cbkr cbre cbrn ccbc ccbn cccb cccc ccee ccnb ccnc ccne ccnr ccob ccoc ccrc ccre cec- cece ceco ceeb ceec ceke cen- cene ceno ceor cer- cerc cere cern cero ckbc ckbe ckck ckco cken cker cknb cknc ckob ckoc ckoo ckor ckrc cnbc cnco cnrc cnrr cobb cobe cobo coce cock coco coen cok- coke coko con- conc cone conk conn cono coob cook coon cor- corb corc core cork corn coro corr crbc crcc crce crcr cre- creb crec cree cren creo crkc crne crob croc croe crok cron croo cror ebbc ebbo ebbr ebcc eben eber ebno eboe ebon eboo ebor ebro ecbc ecbe eccb eccc ecce ecco ecko ecne eco- econ ecrc ecrr eeee eeke eeoc eerc eero ekco ekeb ekek eken eker ekne enb- enbn enbr ence enco enee eneo ener enke enkr ennc enne eno- enoc enoe enon eone eore erbb erbe ercc erce ereb erec eren erer erke erne erno erob eroc eroe eron eroo errc erre erro kbbb kbbc kbbe kbbk kbbo kbbr kbcb kbce kbck kbco kbcr kbeb kbec kbee kbek kben kbeo kber kbkb kbkk kbko kbkr kbnn kbno kbnr kbob kboc kboe kbok kbon kboo kbrb kbrc kbre kbrk kbrn kbro kcbc kcbk kcbr kccb kccc kcck kccr kceb kcec kcee kceo kckc kckk kckn kcko kckr kcnb kcno kcnr kcob kcoe kcon kcor kcrc kcrn kcro kcrr kebb kebc kebe kebn kebr keck keco kecr keek keen keer kekb kekc keke keko ken- kene kenk kenn keno kenr keok keon ker- kerb kerc kere kerk kern kero kerr kkbb kkbe kkbn kkbo kkbr kkcb kkck kkcn kkco kkcr kken kkkk kknb kkne kknn kkno kkob kkon kkoo kkor kkrb kkrc kkre kkrk kkrn kkro kkrr knbb knbc knbe knbn knbr kncb knce knck kncn knco kncr kneb knec knee knek knen kneo knkk knnb knnk knnr knob knoc knoe knok knon knor knrb knrk knro kobb kobc kobe kobk kobn kobo kobr kocb kock kocn koen kokb kokc koke kokk kokn koko kokr konc kone konk kono koob kooc kook koon kooo koor korb korc kore kork korn koro korr krbb krbe krbk krbr krcb krcc krce krcn krco kreb krec kree krek kren kreo krkc krke krkk krkn krko krkr krnb krne krnk krnn krno krob kroc kroe krok kroo kror krrb krrc krre krrk krrn krro krrr nbbc nbbo nbcc nbco nber ncbc nccc nccn nccr ncec ncee ncen ncer ncnc ncoc ncor ncrc ncre nebb nebe nebn nebo nebr necc nece neck neco necr neeb neen neer neke neko nene neno neo- neoc neon neoo nerc nere nerk nero nerr nkok nkor nnnn nobc nobo noce nock noco noer noke noko non- none nonn nono noo- noob nook noon nooo noor nor- norb norc nore nork norn noro norr nren nroc nron nrrc o-eo obbo obec oben ober obkb oboe obok obon obor obre obro ocbc occc occn oce ocee ocke ocon ocre ocro ocrr oec- oecc oeec oen- oeno oere oken oker okko okno okok okon okor okre okro onc- once onco one- oneb onec onee onek oneo oner onne onno onon onor oobe oocr ooer oone oooo oore orbb orbe orbo orce orco ore- oreb orec orek oren oreo orer orke orko ornc orne orno oro- oroe orok oron oror orro rbbb rbbr rcbc rcbo rccb rccc rcnr rcon rebb rebe rebk rebo recc rece reck recr reeb reek reen reke reko rene renk renn reno rere rero rnbr rnco rob- robb robe robo rocc roce rock roco roen roer roke rokk roko rokr ronc rone ronk rono roob rook roon roor rorc rore rork roro rrrr