-ene -one bbbb bbeb bbet bbrc bcbc bccc bcec bcer bcet bcor bctc bebb bebe bebo beeb been beer beet bene benn beno bent beo- beon beor beot berc bere bern bero berr bert betc bete beto bett bner bnet bnoc bnor bnrr bobb bobe bobo boce boco boec boee boen boeo boer boet bonc bone bonn bono bont boob booc booe boon boor boot bor- bore born boro borr bort botb bote botn boto bott brcb brce breb brec bree bren breo brer bret brno brob broc broe bron broo bror brot brrr brtc btcc btec bten btob btor btrc btrt bttb c-bo cbbc cbcc cbce cbcn cbcr cbct cbec cbee cber cbet cbot cbre cbrn cbrt cbtc ccbc ccbn cccb cccc ccee ccnb ccnc ccne ccnr ccob ccoc ccrc ccre ccrt cctb cctc cctt cec- cece ceco cect ceeb ceec cen- cene ceno cent ceor cer- cerc cere cern cero cert cet- cete ceto cnbc cnco cnet cnrc cnrr cnrt cntc cntr cobb cobe cobo coce coco coct coen con- conc cone conn cono cont coob coon coot cor- corb corc core corn coro corr cort cotb cotc cote cotn coto cott crbc crcc crce crcr cre- creb crec cree cren creo cret crne crob croc croe cron croo cror crot crrt crtc ctec cten ctne ctor ctot ctrc ctrn cttn ebbc ebbo ebbr ebcc eben eber ebno eboe ebon eboo ebor ebro ecbc ecbe eccb eccc ecce ecco ecct ecne eco- econ ecot ecrc ecrr ect- ectc ecto eeee eent eeoc eerc eero eetc eete enb- enbn enbr ence enco enee eneo ener ennc enne eno- enoc enoe enon ent- ente ento entr eone eont eore eotc eoto erbb erbe ercc erce ereb erec eren erer eret erne erno erob eroc eroe eron eroo errc erre erro etbc etbr etcc etco etec etee eten eter etne etnr etoe eton etre etro ette ettn etto nbbc nbbo nbcc nbco nber ncbc nccc nccn nccr ncct ncec ncee ncen ncer ncnc ncoc ncor ncrc ncre nctc ncte nctr nebb nebe nebn nebo nebr necc nece neco necr nect neeb neen neer neet nene neno nent neo- neoc neon neoo neot nerc nere nero nerr nert net- netb nete neto nett nnnn nnot nntn nobc nobo noce noco noct noer non- none nonn nono nont noo- noob noon nooo noor noot nor- norb norc nore norn noro norr nort not- note noto nott nren nroc nron nrrc ntbc ntcc nter ntrc ntto nttr o-eo obbo obec oben ober obet oboe obon obor obot obre obro ocbc occc occn occt oce ocee ocet ocon ocre ocro ocrr oct- octe octo oec- oecc oeec oen- oeno oere onc- once onco onct one- oneb onec onee oneo oner onne onno onon onor ont- ontc onto oobe oocr ooer oone oont oooo oore oort ootb orbb orbe orbo orce orco ore- oreb orec oren oreo orer ornc orne orno oro- oroe oron oror orot orro ortc orte orto otee oten oter oto- otoe oton otoo otor otre otro otte otto rbbb rbbr rcbc rcbo rccb rccc rcet rcnr rcon rctc rebb rebe rebo recc rece recr rect reeb reen reet rene renn reno rent reot rere rero rert rete reto retr rett rnbr rnco rnnt rnot rob- robb robe robo robt rocc roce roco roen roer roet ronc rone rono ront roob roon roor root rorc rore roro rort rotc rote rotn roto rotr rott rrrr rtcc rtce rtee tbcb tbcc tbce tbrb tccc tcnn tcon tctc tebo teco tecr tect teec teen teer teet tenb tenc tene tenn teno tent teon teor ter- terc tere tern tero terr tete teto tetr tett tnbc tncc tneb tobe tobo tobt toce toco toee toen toer toet tonb tone tonn tono toon toor toot torc tore torn toro torr tort totc tote toto totr tott trcc tre- trec tree tren treo tret trno troc troe tron troo trot trtc trte trtr ttbb ttcn tten tteo tter ttoe tton tttt