bbbb bbbs bbeb bblb bbls bcbc bcbs bccc bccl bccs bcec bces bcsc bcsl bcss bcuc bebb bebe becs becu beeb beel bees bele bell bels belu bes- bese bess blcu bleb blee bles bleu blls blss blub blue blus bscs bseb bsec bsee bses bslc bssc bsse bubb bube bubs bubu bucc buce bucs bucu buel bueu bulb bule bull buls bulu busc buse buss busu buus cbbc cbbs cbcc cbce cbcl cbcs cbcu cbec cbee cblb cblc cbsc cbse cbus ccbc cccb cccc cccl cccs cccu ccee ccel cclc ccls ccsl ccss ccuc ccus cebs cebu cec- cece cecs ceeb ceec ceel cees cel- celc cele cell cels cesc cese cess clec clee cles cleu clsc club clue cscb cscc csce cscl cscs csec csee cslu csse csus cub- cubb cube cubs cucc cuce cues culb culc cule cull culs cusb cuss cusu e-cl ebbc ebbs ebcc ebel ebes ebul ebus ecbc ecbe eccb eccc ecce eccl eces ecsc ecse ecss ecsu ecus eecs eeee eees eele eels eese el-b elbe elbu elcb elce elec elee eles elle ells ellu else elsu elue elul elus esbs escb esce escs escu esee esel eses esse essl essu esus eubc eule euse lbcc lbsc lcbc lccc lcce lccs lces lcls lcsc le-u lebu lece leel lees lele lell lelu lese less lesu leuc llbs llcc llcs lles lleu lllc llll lsbu lscb lscs lses lube lubs luce lucs lues lule lull lulu luse luss sbbs sbcc sbcs sbse sbus sccc scce sccl sccs scec scee scel scl- sclc scls scsc scsl scsu scub scul se-c se-e se-s se-u sebe sebs sec- secc sece secs secu seeb seec seel sees seeu selb sele sell sels selu sesc sese sess seul slcc slcu sleb slee sles slsc slsu slub sluc slue sscc ssce sscs ssec ssee sses sslc ssle sssb sssc ssss sub- subb subl subs suc- succ sucs suee suel sues sueu sul- sulc sule sull sulu sus- suse suss susu suus ubbe uble ubls ucbc ucel uces ucsb ucsc ucsu uele uell uess ulbc ulcc uleb ulee ules ulle ulul ulus usbc usbe usbl usbs uscc usce uscs usee usel uses usle uslu ussb ussc usse usss ussu usul usus uulu uuuu