-ene -one bbbb bbeb bbrc bcbc bccc bcec bcer bcor bcvo bebb bebe bebo beeb been beer bene benn beno beo- beon beor berc bere bern bero berr bevo bner bnoc bnor bnrr bobb bobe bobo boce boco boec boee boen boeo boer bonc bone bonn bono boob booc booe boon boor bor- bore born boro borr bove bovo brcb brce breb brec bree bren breo brer brev brno brob broc broe bron broo bror brrr c-bo cbbc cbcc cbce cbcn cbcr cbec cbee cber cbre cbrn cbvb cbve cbvn cbvr ccbc ccbn cccb cccc cccv ccee ccnb ccnc ccne ccnr ccob ccoc ccrc ccre ccvo cec- cece ceco ceeb ceec cen- cene ceno ceor cer- cerc cere cern cero cevo cnbc cnco cnrc cnrr cobb cobe cobo coce coco coen con- conc cone conn cono conv coob coon cor- corb corc core corn coro corr cove covo crbc crcc crce crcr cre- creb crec cree cren creo crne crob croc croe cron croo cror cvcc cven cver cvrr ebbc ebbo ebbr ebcc eben eber ebno eboe ebon eboo ebor ebro ecbc ecbe eccb eccc ecce ecco ecne eco- econ ecrc ecrr ecrv eeee eeoc eerc eero eevn en-v enb- enbn enbr ence enco enee eneo ener ennc enne eno- enoc enoe enon eone eore erbb erbe ercc erce ereb erec eren erer erev erne erno erob eroc eroe eron eroo errc erre erro erve even ever evoe evon evoo evre 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 neco necr neeb neen neer neev nene neno neo- neoc neon neoo nerc nere nero nerr nerv neve nevo nnnn nobc nobo noce noco noer non- none nonn nono noo- noob noon nooo noor noov nor- norb norc nore norn noro norr norv nov- nove novo nren nroc nron nrrc nvcc o-eo obbo obec oben ober oboe obon obor obre obro ocbc occc occn oce ocee ocon ocre ocro ocrr oec- oecc oeec oen- oeno oere onc- once onco one- oneb onec onee oneo oner onne onno onon onor oobe oocr ooer oone oooo oore orbb orbe orbo orce orco ore- oreb orec oren oreo orer ornc orne orno oro- oroe oron oror orro orve orvr ovee oven over ovo- ovon ovoo ovre rbbb rbbr rcbc rcbo rccb rccc rcnr rcon rcvr rebb rebe rebo recc rece recr reeb reen reev rene renn reno rere rero reve revo rnbr rnco rob- robb robe robo rocc roce roco roen roer roev ronc rone rono roob roon roor rorc rore roro rove rovo rrrr rv-c rver vbcc vcon vecc veen veer ven- vene venn veno veor ver- verb vere vern vero veve vevo voce voer vone vonn vooc voor vor- vore voro vreo vrnn vroc vron vver vvob vvvv