bbbb bbbs bcbc bcbs bccc bccs bcnu bcsc bcsn bcss bcuc bnss bscs bsns bssc bubb bubs bubu bucc buck bucs bucu bukk buku bunb bunk bunn buns bunu busc busk buss busu buus cbbc cbbs cbcc cbcn cbcs cbcu cbkn cbsc cbsn cbus ccbc ccbn cccb cccc cccs cccu ccnb ccnc ccns ccnu ccsn ccss ccuc ccus ckbc ckck ckcs cknb cknc ckns cksb cnbc cnss cscb cscc cscs csks csus cub- cubb cubs cucc cuck cucn cuk- cusb cusk cuss cusu kbbb kbbc kbbk kbbs kbbu kbcb kbck kbcs kbcu kbkb kbkk kbnn kbnu kbsb kbsk kbsn kbss kbsu kbub kbuc kbuk kbun kbus kbuu kcbc kcbk kcbs kcbu kccb kccc kcck kccu kckc kckk kckn kcnb kcns kcsb kcsc kcsn kcss kcsu kcub kcuk kkbb kkbn kkbs kkcb kkck kkcn kkcs kkkk kknb kknn kkns kknu kksn kkss kksu kkus kkuu knbb knbc knbn knbu kncb knck kncn kncu knkk knnb knnk knns knsb knsc knsk knsn knss knsu knub knuk knus ksbc ksbn ksbs kscb ksck kscn kscs kscu kskb kskk kskn ksks ksku ksnb ksnc ksnk ksnn ksns kssn ksss kssu ksub ksun ksuu kubb kubc kubs kubu kucb kucc kukk kukn kuks kuku kunc kunk kuns kunu kusb kusc kusn kusu kuub kuuk kuuu nbbc nbcc nbcs ncbc ncbs nccc nccn nccs nccu ncnc ncsc ncss ncuk nnnn nnss nscc nscs nskk nssb nssc nsss nsub nubc nubk nubs nuck nucs nucu nuku nunc nunk nunn nuns nuss nusu nuuk sbbs sbcc sbcs sbus sccc sccs sck- scsc scsn scsu scub scun skn- skss skun sncc snns snub snus ssbn sscc sscs ssns sssb sssc ssss sub- subb subs suc- succ suck sucs suks suku sun- sunb sunk sunn suns sunu sus- susk suss susu suus ucbc ucsb ucsc ucsu ukcc uknc uksc uncc uncs unkn unks unns uns- unsc unus us-k usbc usbs uscc uscs usnc usnu ussb ussc usss ussu usun usus uuuu