-ene bbbb bbcm bbeb bbrc bcbc bccc bccm bcec bcer bebb bebe beeb beem been beer beme bene benn berc bere berm bern berr bmce bner bnrr brcb brce breb brec bree brem bren brer brmc brrm brrr cbbc cbcc cbce cbcm cbcn cbcr cbec cbee cber cbme cbre cbrm cbrn ccbc ccbn cccb cccc cccm ccee ccmb ccmc ccmm ccnb ccnc ccne ccnm ccnr ccrc ccre cec- cece cecm ceeb ceec ceem cemb ceme cemm cemr cen- cene cer- cerc cere cern cmbc cmcc cmec cmmb cmmc cmmn cmrn cmrr cnbc cnbm cnrc cnrr crbc crcc crce crcr cre- creb crec cree crem cren crmb crmn crne ebbc ebbr ebcc eben eber ecbc ecbe eccb eccc ecce eccm ecem ecne ecrc ecrm ecrr eeee eerc embe embr emcc emcn emen emer emme emne emre enb- enbn enbr ence enee enem ener ennc enne erbb erbe ercc erce ereb erec erem eren erer ermc erme erne errc erre mcbc mccc mcmc mcrc mebe mec- mecc mece mecr meem meen meer memc meme memr men- menc mene menn mer- merb merc mere merm mern mmcc mmcm mmen mmmc mmmm mmrc mnbb mnem mr-c mrbb mrbm mrcb mrcc mrce mreb mree mren mrmc mrnc mrrc nbbc nbcc nber ncbc nccc nccn nccr ncec ncee ncem ncen ncer ncmm ncnc ncrc ncre nebb nebe nebn nebr necc nece necr neeb neem neen neer nem- neme nemn nene nerc nere nerm nerr nm-e nmmc nmrc nnmc nnnn nrem nren nrrc rbbb rbbr rcbc rccb rccc rcnr rebb rebe recc rece recm recr reeb reem reen reme remn rene renn rere rnbr rrmc rrrr