-ene bbbb bbcm bbeb bbrc bcbc bccc bccm bcec bcer bcnu bcru bcuc bebb bebe becu beeb beem been beer beme bemu bene benn benu berc bere berm bern berr beru beur bmce bner bnrr brcb brce breb brec bree brem bren brer brmc brrm brrr bruc brue brum brun bubb bube bubu bucc buce bucu buem buen buer bueu bum- bumb bunb bune bunn bunu bur- burb bure burm burn burr buru cbbc cbcc cbce cbcm cbcn cbcr cbcu cbec cbee cber cbme cbre cbrm cbrn ccbc ccbn cccb cccc cccm cccu ccee ccmb ccmc ccmm ccnb ccnc ccne ccnm ccnr ccnu ccrc ccre ccuc cebu cec- cece cecm ceeb ceec ceem cemb ceme cemm cemr cemu cen- cene cer- cerc cere cern cmbc cmcc cmec cmmb cmmc cmmn cmrn cmrr cnbc cnbm cnrc cnrr crbc crbu crcc crce crcr cre- creb crec cree crem cren creu crmb crmn crne crub crue crum crun cub- cubb cube cucc cuce cucm cucn cuer cum- cume cune curb cure curn curr ebbc ebbr ebcc eben eber ebru ebur ecbc ecbe eccb eccc ecce eccm ecem ecne ecrc ecrm ecrr ecru eeee eerc embe embr emcc emcn emen emer emeu emme emmu emne emre enb- enbn enbr ence enee enem ener ennc enne ennu enue enum enur erbb erbe ercc erce ereb erec erem eren erer ermc erme erne errc erre erub eruc erum erur eubc euer eumc eur- eurc eure mcbc mccc mcmc mcrc mebe mec- mecc mece mecr meem meen meer memc meme memr memu men- menc mene menn menu mer- merb merc mere merm mern meru meum mmcc mmcm mmen mmmc mmmm mmrc mmun mnbb mnem mr-c mrbb mrbm mrcb mrcc mrce mreb mree mren mrmc mrnc mrrc mube muc- mucc muce mucu muee mume mumm mumu munc mune munn munu murc mure murn murr muru nbbc nbcc nber ncbc nccc nccn nccr nccu ncec ncee ncem ncen ncer ncmm ncnc ncrc ncre ncue nebb nebe nebn nebr nebu necc nece necr neeb neem neen neer nem- neme nemn nemu nene nenu nerc nere nerm nerr neru neuc neue neum neun neur neuu nm-e nmmc nmrc nnmc nnnn nrem nren nrrc nubc nube nuce nucu nuee nuer numb nume numm numu nunc nune nunn nurc nure nurn nurr nuru rbbb rbbr rcbc rccb rccc rcnr rebb rebe rebu recc rece recm recr recu reeb reem reen reme remn rene renn renu rere reru reue reuu rnbr rrmc rrrr rrum rrun rubb rube rubu ruce ruen ruer rumb rume rumm runc rune runn rurc rure ruru ruun ubbe uber ucbc ucmc ucrc umb- umbe umec umer unbe uncc unce uneb unec unee unen uner unmc unmr unne unum urbe ure- urne urre urum urun urur uuen uuuu