bbbb bbbs bbci bcbc bcbs bccc bcci bccs bcis bcsc bcss bcuc bibb bibi bibs bicc bici bics biis bis- bisc biss bisu bisy biys bsci bscs bsic bssc bubb bubi bubs bubu bucc buci bucs bucu buic buis buiu busc busi buss busu busy buus buyi buys buyu bysb bysi byss bysy 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 ciss cisy ciuc cius ciyu cscb cscc csci cscs csib csis csus csys cub- cubb cubi cubs cuby cucc cuci cui- cuis cusb cuss cusu cusy cuy- cybb cybc cybi cyc- cycb cycc cycs cyy- cyyc i-by ibcs ibis ibss ibus ibuy ibyi icbc icbs iccb iccc icci iccs iccu icis icsb icsc icsi icss icub icus iiii iiis iisc iisi iisu iiuc iscc isci iscs iscu isic isis issc issi isss issu issy isus isys iucc iuiu iuss s-ib s-ic s-ii sbbs sbcc sbcs sbic sbsi sbus scbi sccc sccs sccy sci- scic scis scsc scsi scsu scub sibc sibi sibs sibu siby sicc sici sics sicu sisc sisi siss sisu sisy siui sius siyi siyu ssby sscc ssci sscs ssis sssb sssc sssi ssss sub- subb subi subs suc- succ suci sucs suis sus- susi suss susu susy suus suyi suyu syis syss ubbi ubic ubii ubis ucbc ucci ucsb ucsc ucsu usbc usbs uscc uscs usis ussb ussc usss ussu ussy usui usus uusi uuuu ybbs yccc ycsb yiss ysby ysii yssu ysyb yubu yuyu yyyy