-ene bbbb bbeb bblb bcbc bccc bccl bcec bcnu bcuc bebb bebe becu beeb beel been bele bell belu bene benn benu blcu bleb blee bleu blub blue bubb bube bubu bucc buce bucu buel buen bueu bulb bule bull bulu bunb bune bunn bunu cbbc cbcc cbce cbcl cbcn cbcu cbec cbee cblb cblc cbln ccbc ccbn cccb cccc cccl cccu ccee ccel cclc ccnb ccnc ccne ccnu ccuc cebu cec- cece ceeb ceec ceel cel- celc cele cell cen- cene clec clee cleu club clue clun cnbc cnbl cnel cub- cubb cube cucc cuce cucn culb culc cule cull cune e-cl ebbc ebcc ebel eben ebul ecbc ecbe eccb eccc ecce eccl ecne eeee eele el-b elbe elbu elcb elce elec elee elen elle ellu elne elue elul enb- enbn ence encl enee enel ennc enne ennu enue eubc eule lbcc lcbc lccc lcce le-u lebu lece leel leen lele lell lelu lene lenn leuc leun llcc lleu lllc llll lube luce lule lull lulu lune lunn nbbc nbcc ncbc nccc nccn nccu ncec ncee ncel ncen nclc ncln ncnc ncue nebb nebe nebn nebu necc nece neeb neel neen nelc nele nell nene nenu neuc neue neun neuu nlcc nlec nnnn nubc nube nubl nuce nucu nuee nuel nule null nunc nune nunn ubbe uble ucbc ucel uele uell ulbc ulcc uleb ulee ulen ulle ulne ulul unbe uncc unce uncl uneb unec unee unen unle unne uuen uulu uuuu