bbbb bbbs bblb bbls bcbc bcbs bccc bccl bccs bcsc bcsl bcss bcuc blcu blls blss blub blus bscs bslc bssc bubb bubs bubu bucc bucs bucu bulb bull buls bulu busc buss busu buus cbbc cbbs cbcc cbcl cbcs cbcu cblb cblc cbsc cbus ccbc cccb cccc cccl cccs cccu cclc ccls ccsl ccss ccuc ccus clsc club cscb cscc cscl cscs cslu csus cub- cubb cubs cucc culb culc cull culs cusb cuss cusu lbcc lbsc lcbc lccc lccs lcls lcsc llbs llcc llcs lllc llll lsbu lscb lscs lubs lucs lull lulu luss sbbs sbcc sbcs sbus sccc sccl sccs scl- sclc scls scsc scsl scsu scub scul slcc slcu slsc slsu slub sluc sscc sscs sslc sssb sssc ssss sub- subb subl subs suc- succ sucs sul- sulc sull sulu sus- suss susu suus ubls ucbc ucsb ucsc ucsu ulbc ulcc ulul ulus usbc usbl usbs uscc uscs uslu ussb ussc usss ussu usul usus uulu uuuu