-ene bbbb bbdd bbeb bbrc bcbc bccc bcde bcec bcer bcnu bcru bcuc bd-r bdbc bddc bebb bebe becu bede bedu beeb beed been beer bend bene benn benu berc berd bere bern berr beru beur bner bnrr brcb brce breb brec bred bree bren brer brrr bruc brud brue brun bubb bube bubu bucc buce bucu budb budd bude budu buen buer bueu bunb bund bune bunn bunu bur- burb burd bure burn burr buru c-cd cbbc cbcc cbce cbcn cbcr cbcu cbdb cbdc cbdn cbec cbee cber cbnd cbrd cbre cbrn ccbc ccbn cccb cccc cccu ccdc ccdn ccdr cced ccee ccnb ccnc ccne ccnr ccnu ccrc ccre ccuc cd-e cd-r cddb cddr cdec cder cdnb cdnc cdre cebu cec- cece cedd cede cedu ceeb ceec cen- cend cene cer- cerc cerd cere cern cnbc cndd cnrc cnrr crbc crbu crcc crce crcr crdc cre- creb crec cred cree cren creu crne crub crud crue crun cub- cubb cube cucc cuce cucn cude cued cuer cund cune curb curd cure curn curr dbcc dbrn dcbc dccb dccc dccu dcdb dddd ddrc ddre ddub debe debu dec- decc decd dece dedd dede dedu deeb deed deen deer dene denn denu der- derb derc dere dern derr deue deur dnce dner dnrc drbc dred dree dren drub drue druu dub- dubb dubc dube dubu duce dudd dude dudu duer dunc dune dunn dure durn duru duur ebbc ebbr ebcc ebed eben eber ebru ebur ecbc ecbe eccb eccc ecce ecdc eced ecne ecrc ecrr ecru eddc edde ede- eden eder edrn edru educ edun edur eede eedu eeee eend eerc enb- enbn enbr ence end- ende endu ened enee ener ennc enne ennu enue enur erbb erbe ercc erce erde ereb erec ered eren erer erne errc erre erub eruc erur eubc eucd eude euer eur- eurc eure nbbc nbcc nber ncbc nccc nccn nccr nccu ncdc ncdn ncdr ncdu ncec nced ncee ncen ncer ncnc ncnd ncrc ncre ncue ndcc nddb ndde nder ndrc ndre nebb nebe nebn nebr nebu necc nece necr nedc nedd nede nedu neeb need neen neer nend nene nenu nerc nerd nere nerr neru neuc neue neun neur neuu nndb nnnn nrdc nren nrrc nrrd nubc nube nuce nucu nudc nudd nude nuee nuer nunc nune nunn nurc nurd nure nurn nurr nuru rbbb rbbr rcbc rccb rccc rcdc rcde rcnr rcrd rder rebb rebe rebu recc recd rece recr recu redc redd rede redr redu reeb reed reen rend rene renn renu rerd rere reru reue reuu rnbr rndc rred rrrr rrun rubb rube rubu ruce rudd rude rued ruen ruer runc rund rune runn rurc rurd rure ruru ruud ruun ubbe uber ubud ucbc ucdc ucdd ucrc udbc uden uder udun uend unbd unbe uncc unce unde uneb unec uned unee unen uner unne urbe urde urdu ure- ured urne urre urun urur uuen uuuu