-ene -one bbbb bbeb bbfc bbfn bbrc bcbc bccc bcec bcer bcfc bcof bcor bebb bebe bebo beck beeb beef beek been beer befe beff befo beke beko bene benk benn beno beo- beof beok beon beor berc bere berk bern bero berr bner bnoc bnor bnrr bobb bobe bobo boce bock boco boec boee boef boen boeo boer bofe boff boke bokn boko bonc bone bonk bonn bono boob booc booe boof book boon boor bor- bore borf bork born boro borr brcb brce breb brec bree bref brek bren breo brer brfc brkb brno brob broc broe brok bron broo bror brrr c-bo cbbc cbcc cbce cbcn cbcr cbec cbee cbef cber cbfb cbfc cbkn cbko cbkr cbre cbrn ccbc ccbn cccb cccc cccf ccee ccfc ccff ccnb ccnc ccne ccnf ccnr ccob ccoc ccrc ccre ccrf cec- cece ceco ceeb ceec cef- cefc cefn ceke cen- cene ceno ceor cer- cerc cere cerf cern cero cfbc cfbn cfbr cfcb cfcf cfcn cfco cffb cffr cfnb cfnr cfor cfrb cfre cfrn ckbc ckbe ckck ckco cken cker ckfr cknb cknc ckob ckoc ckoo ckor ckrc cnbc cnco cnrc cnrr cobb cobe cobo coce cock coco coen cofc cofe coff cok- coke coko con- conc cone conf conk conn cono coob coof cook coon cor- corb corc core corf cork corn coro corr crbc crcc crce crcr cre- creb crec cree cren creo crfc crkc crne crob croc croe crok cron croo cror ebbc ebbo ebbr ebcc eben eber ebfc ebno eboe ebon eboo ebor ebro ecbc ecbe eccb eccc ecce ecco ecef ecfc ecfr ecko ecne eco- econ ecrc ecrf ecrr eeee eefe eefn eeke eeoc eerc eero efbr efco efen efeo efke efon efor ekco ekeb ekek eken eker ekfc ekne enb- enbn enbr ence enco enee eneo ener enfb enke enkr ennc enne eno- enoc enoe enon eone eore erbb erbe ercc erce ereb erec eren erer erfc erke erne erno erob eroc eroe eron eroo errc erre erro f--k fccf febo fece feck feeb feek feen feer fefc fefe feff fefo feke feko fene fenk fenn feof feon ferb ferc fere ferk fern fero ferr ffcc ffee ffff ffrr foce fock foco foer fofo foke fone fono foof fook foon for- forb fore fork forn foro forr frbc frcc frcn free fren freo frfc frob froe fron kbbb kbbc kbbe kbbf kbbk kbbo kbbr kbcb kbce kbck kbco kbcr kbeb kbec kbee kbef kbek kben kbeo kber kbfb kbfc kbff kbfk kbfo kbfr kbkb kbkf kbkk kbko kbkr kbnn kbno kbnr kbob kboc kboe kbok kbon kboo kbrb kbrc kbre kbrf kbrk kbrn kbro kcbc kcbf kcbk kcbr kccb kccc kcck kccr kceb kcec kcee kceo kcfb kcfc kcfn kcfo kckc kckf kckk kckn kcko kckr kcnb kcno kcnr kcob kcoe kcof kcon kcor kcrc kcrn kcro kcrr kebb kebc kebe kebn kebr keck keco kecr keef keek keen keer kefb kefc keff kefr kekb kekc keke keko ken- kene kenk kenn keno kenr keok keon ker- kerb kerc kere kerf kerk kern kero kerr kfbc kfbk kfbn kfcf kfco kfcr kfeb kfer kffb kfff kffk kffn kfkb kfnc kfnf kfnk kfnn kfno kfok kfon kfoo kfor kfrc kfre kfrn kfro kfrr kkbb kkbe kkbn kkbo kkbr kkcb kkck kkcn kkco kkcr kken kkfn kkfr kkkk kknb kkne kknn kkno kkob kkon kkoo kkor kkrb kkrc kkre kkrf kkrk kkrn kkro kkrr knbb knbc knbe knbn knbr kncb knce knck kncn knco kncr kneb knec knee knef knek knen kneo knfo knfr knkk knnb knnk knnr knob knoc knoe knok knon knor knrb knrk knro kobb kobc kobe kobk kobn kobo kobr kocb kocf kock kocn koen kofc kofe koff kofk kofo kokb kokc koke kokf kokk kokn koko kokr konc kone konk kono koob kooc kook koon kooo koor korb korc kore korf kork korn koro korr krbb krbe krbk krbr krcb krcc krce krcn krco kreb krec kree kref krek kren kreo krfc krfe krff krfn krfo krkc krke krkk krkn krko krkr krnb krne krnk krnn krno krob kroc kroe krof krok kroo kror krrb krrc krre krrf krrk krrn krro krrr nbbc nbbo nbcc nbco nber nbfc ncbc nccc nccf nccn nccr ncec ncee ncef ncen ncer ncfc ncfe ncnc ncoc ncor ncrc ncre nebb nebe nebn nebo nebr necc nece neck neco necr neeb neef neen neer nefe neff neke neko nene neno neo- neoc neon neoo nerc nere nerf nerk nero nerr nfer nfff nfon nkfc nkok nkor nkrf nnnn nobc nobo noce nock noco noer noke noko non- none nonn nono noo- noob nook noon nooo noor nor- norb norc nore norf nork norn noro norr nren nrfc nroc nron nrrc o-eo obbo obec oben ober obkb oboe obok obon obor obre obro ocbc occc occn oce ocee ocef ocke ocon ocre ocro ocrr oec- oecc oeec oen- oeno oere ofcr ofek ofen ofer off- offc offe offo offr ofno ofor ofre oken oker okko okno okok okon okor okre okro onc- once oncf onco one- oneb onec onee onek oneo oner onne onno onon onor oobe oocr ooer ooff oone oooo oore orbb orbe orbo orce orco ore- oreb orec orek oren oreo orer orfe orff orke orko ornc orne orno oro- oroe orof orok oron oror orro rbbb rbbr rcbc rcbo rccb rccc rcfc rcnr rcon rebb rebe rebk rebo recc rece reck recr reeb reef reek reen refe reff refn refr reke reko rene renk renn reno reof rere rero rfef rffc rkkf rnbr rnco rob- robb robe robo rocc roce rock roco roen roer rofc rofe roff rofo roke rokk roko rokr ronc rone ronk rono roob roof rook roon roor rorc rore rork roro rrfc rrrr