bbbb bbbs bbci bcbc bcbs bccc bcci bccs bcis bcsc bcss bcuc bibb bibi bibs bicc bici bick bics biis biku bis- bisc bisk biss bisu bsci bscs bsic bssc bubb bubi bubs bubu bucc buci buck bucs bucu buic buik buis buiu buki bukk buku busc busi busk buss busu buus cbbc cbbs cbcc cbcs cbcu cbsc cbsi cbus ccbc cccb cccc ccci cccs cccu ccic ccii ccis ccsi ccss ccuc ccus cibc cibi cicc cici cics cicu ciii ciis cis- cisc cisk ciss ciuc cius ckbc ckbi ckck ckcs cksb cscb cscc csci cscs csib csik csis csks csus cub- cubb cubi cubs cucc cuci cuck cui- cuis cuk- cusb cusk cuss cusu ibcs ibis ibss ibus icbc icbs iccb iccc icci iccs iccu icis icks icsb icsc icsi icss icub icus iiii iiis iisc iisi iisu iiuc ikki iksu iscc isci iscs iscu isic isis isku issc issi isss issu isus iucc iuiu iuss k-ci kbbb kbbc kbbi kbbk kbbs kbbu kbcb kbci kbck kbcs kbcu kbib kbic kbik kbis kbiu kbkb kbkk kbsb kbsi kbsk kbss kbsu kbub kbuc kbuk kbus kbuu kcbc kcbi kcbk kcbs kcbu kccb kccc kcci kcck kccu kcic kcii kcis kciu kckc kckk kcsb kcsc kcsi kcss kcsu kcub kcui kcuk kibb kibc kibi kibs kibu kicb kicc kick kics kiic kiii kiik kiis kiiu kikc kiki kikk kiku kisc kisi kisk kiss kisu kiuu kkbb kkbi kkbs kkcb kkci kkck kkcs kkic kkik kkkk kksi kkss kksu kkus kkuu ksbc ksbi ksbs kscb ksci ksck kscs kscu ksib ksii ksik ksis kskb kskk ksks ksku kssi ksss kssu ksub ksui ksuu kubb kubc kubs kubu kucb kucc kuci kuic kuik kuki kukk kuks kuku kusb kusc kusu kuub kuuk kuuu s-ib s-ic s-ii sbbs sbcc sbcs sbic sbsi sbus scbi sccc sccs sci- scic scis sck- scsc scsi scsu scub sibc sibi sibs sibu sicc sici sick sics sicu siik siki siks siku sisc sisi sisk siss sisu siui sius skic skik skis skiu skss skui sscc ssci sscs ssis sssb sssc sssi ssss sub- subb subi subs suc- succ suci suck sucs suis suki suks suku sus- susi susk suss susu suus ubbi ubic ubii ubik ubis ucbc ucci ucsb ucsc ucsu ukcc uksc us-k usbc usbs uscc uscs usis ussb ussc usss ussu usui usus uusi uuuu