bbbb bbeb bblb bcbc bccc bccl bcec bcuc bebb bebe beck becu beeb beek beel beke bele belk bell belu beuk blcu bleb blee blek bleu blkb blub blue bubb bube bubu bucc buce buck bucu buel bueu buke bukk buku bulb bule bulk bull bulu cbbc cbcc cbce cbcl cbcu cbec cbee cbkl cblb cblc ccbc cccb cccc cccl cccu ccee ccel cclc ccuc cebu cec- cece ceeb ceec ceel ceke cel- celc cele cell ckbc ckbe ckck ckcl clec clee clek cleu club clue cub- cubb cube cucc cuce cuck cuek cuk- cuke culb culc cule culk cull e-cl ebbc ebcc ebel ebul ecbc ecbe eccb eccc ecce eccl eeee eeke eele ekeb ekek el-b elbe elbu elcb elce elec elee elek elke elle ellu elue elul eubc eule kbbb kbbc kbbe kbbk kbbl kbbu kbcb kbce kbck kbcl kbcu kbeb kbec kbee kbek kbel kbkb kbkk kbkl kblb kble kbll kblu kbub kbuc kbue kbuk kbul kbuu kcbc kcbk kcbl kcbu kccb kccc kcck kccl kccu kceb kcec kcee kcel kceu kckc kckk kckl kclc kcle kclk kcll kclu kcub kcue kcuk kcul kebb kebc kebe kebu keck keek keel kekb kekc keke kekl keku kele kelk kell kelu keul kkbb kkbe kkbl kkcb kkck kkcl kkkk kklb kklc kkll kkuu klbb klbc klbe klbl klbu klcb klcc klce klck klcl kleb klec klee klek klkc klkk klkl kllb kllc klle kllk klub klue kluk kluu kubb kubc kube kubu kucb kucc kuce kuek kuel kueu kuke kukk kukl kuku kulb kule kull kulu kuub kuuk kuul kuuu lbcc lcbc lccc lcce le-u lebu lece leck leek leel leke lekk lele lell lelu leuc leuk llcc lleu lllc llll lube luce luck luke lule lull lulu luuk ubbe ubek uble ucbc ucel uele uell ukcc ukek ukeu ulbc ulcc uleb ulee ulek ulle uluk ulul uulu uuuu