-ene bbbb bbeb bblb bbrc bcbc bccc bccl bcec bcer bcnu bcru bcuc bebb bebe becu beeb beel been beer bele bell belu bene benn benu berc bere bern berr beru beur blcu bleb blee bleu blrc blub blue blur bner bnrr brcb brce breb brec bree brel bren brer brrr bruc brue brun bubb bube bubu bucc buce bucu buel buen buer bueu bulb bule bull bulu bunb bune bunn bunu bur- burb bure burl burn burr buru cbbc cbcc cbce cbcl cbcn cbcr cbcu cbec cbee cber cblb cblc cbln cbre cbrl cbrn ccbc ccbn cccb cccc cccl cccu ccee ccel cclc ccnb ccnc ccne ccnr ccnu ccrc ccre ccrl ccuc cebu cec- cece ceeb ceec ceel cel- celc cele cell cen- cene cer- cerc cere cerl cern clec clee cler cleu club clue clun cnbc cnbl cnel cnrc cnrr crbc crbu crcc crce crcr cre- creb crec cree cren creu crne crub crue crun cub- cubb cube cucc cuce cucn cuer culb culc cule cull cune curb cure curl curn curr e-cl ebbc ebbr ebcc ebel eben eber ebru ebul ebur ecbc ecbe eccb eccc ecce eccl ecne ecrc ecrl ecrr ecru eeee eele eerc el-b elbe elbu elcb elce elec elee elen eler elle ellu elne elue elul enb- enbn enbr ence encl enee enel ener ennc enne ennu enue enur erbb erbe ercc erce ereb erec erel eren erer erle erll erne errc erre erub eruc erur eubc euer eule eur- eurc eure lbcc lblr lcbc lccc lcce lcer lcrl le-u lebu lece leel leen leer lele lell lelu lene lenn lerc lere lern leuc leun leur llcc lleu lllc llll lncr lner lrne lrrc lrrr lube luce luer lule lull lulu lune lunn lure nbbc nbcc nber ncbc nccc nccn nccr nccu ncec ncee ncel ncen ncer nclc ncln nclr ncnc ncrc ncre ncue nebb nebe nebn nebr nebu necc nece necr neeb neel neen neer nelc nele nell nene nenu nerc nere nerl nerr neru neuc neue neun neur neuu nlcc nlec nler nlrb nnnn nren nrlb nrrc nrrl nubc nube nubl nuce nucu nuee nuel nuer nule null nunc nune nunn nurc nure nurl nurn nurr nuru rbbb rbbr rbcl rble rcbc rccb rccc rcle rcnl rcnr rebb rebe rebu recc rece recr recu reeb reel reen relb rele rell rene renn renu rere reru reue reul reuu rlee rleu rnbr rrle rrrr rrun rubb rube rubu ruce ruel ruen ruer rule rull runc rune runn rurc rure ruru ruun ubbe uber uble ucbc ucel ucrc uele uell ulbc ulcc uleb ulee ulen ulle ullr ulne ulul unbe uncc unce uncl uneb unec unee unen uner unle unne urbe ure- urle urne urre urun urur uuen uulu uuuu