bbbb bbeb bbet bblb bcbc bccc bccl bcec bcet bctc bcuc bebb bebe becu beeb beel beet bele bell belt belu betc bete bett betu blbt blcu bleb blee blet bleu blub blue blut btcc btcl btec bttb bubb bube bubu bucc buce bucu buel bueu bulb bule bull bult bulu but- bute butt cbbc cbcc cbce cbcl cbct cbcu cbec cbee cbet cblb cblc cbtc cbtl ccbc cccb cccc cccl cccu ccee ccel cclc cctb cctc cctl cctt ccuc ccut cebu cec- cece cect ceeb ceec ceel cel- celc cele cell celt cet- cete clec clee clet cleu cltb cltc club clue clut ctec ctle cub- cubb cube cucc cuce culb culc cule cull cult cut- cutc cute cutt e-cl ebbc ebcc ebel ebul ecbc ecbe eccb eccc ecce eccl ecct eclt ect- ectc eeee eele eetc eete eetu el-b elbe elbu elcb elce elec elee elet elle ellu elte elue elul etbc etcc etec etee etel ette ettu eubc eule lbcc lcbc lccc lcce lctl le-u lebu lece lect leel leet lele lell lelu lete lett leuc llcc llet lleu lllc llll ltbl ltcc ltee lttc ltuc lube luce lule lull lulu lute tbcb tbcc tbce tccc tccu tctc tcul tebu tecl tect teec teel teet tel- telc tele tell telt telu tete tett tetu teut ttbb tttt ttul tubb tube tubu tucc tuel tuet tule tull tulu tute tutl tutt tutu ubbe ubet uble ucbc ucel ucut uele uell ulbc ulcc uleb ulee ulle ultt ulul utec utel uttu uulu uuuu