bbbb bbeb bblb bcbc bccc bccl bcec bcuc bebb bebe becu beeb beel bele bell belu blcu bleb blee bleu blub blue bubb bube bubu bucc buce bucu buel bueu bulb bule bull bulu cbbc cbcc cbce cbcl cbcu cbec cbee cblb cblc ccbc cccb cccc cccl cccu ccee ccel cclc ccuc cebu cec- cece ceeb ceec ceel cel- celc cele cell clec clee cleu club clue cub- cubb cube cucc cuce culb culc cule cull e-cl ebbc ebcc ebel ebul ecbc ecbe eccb eccc ecce eccl eeee eele el-b elbe elbu elcb elce elec elee elle ellu elue elul eubc eule lbcc lcbc lccc lcce le-u lebu lece leel lele lell lelu leuc llcc lleu lllc llll lube luce lule lull lulu ubbe uble ucbc ucel uele uell ulbc ulcc uleb ulee ulle ulul uulu uuuu