-ous bbbb bbbs bbci bcbc bcbs bccc bcci bccs bcis bcos bcsc bcss bcuc bibb bibi bibo bibs bicc bici bico bics biis bio- bioc bioi bios biou bis- bisc biso biss bisu bobb bobi bobo bobs bobu boco bocs bocu boi- boii bois boiu boob booc boos bosc bosi boso boss bosu bous bsci bscs bsic bsos bssc bubb bubi bubo bubs bubu bucc buci buco bucs bucu buic buis buiu busc busi buss busu buus c-bo cbbc cbbs cbcc cbcs cbcu cbsc cbsi cbus ccbc cccb cccc ccci cccs cccu ccic ccii ccis ccob ccoc ccsi ccss ccuc ccus cibc cibi cibo cicc cici cico cics cicu ciii ciis ciob cios cis- cisc ciss ciuc cius cobb cobi cobo cobs cobu coco cocu cois coob coos cosc cosi coso coss coub cous cscb cscc csci csco cscs csib csio csis csob csos csus cub- cubb cubi cubs cucc cuci cui- cuis cusb cuso cuss cusu ibcs ibis ibos ibss ibus icbc icbs iccb iccc icci icco iccs iccu icis icoc icos icsb icsc icsi icss icub icus iiii iiio iiis iioi iioo iios iisc iisi iisu iiuc iobi ioci ioii ioio iooi iooo ioos ioso iosu ious iscc isci isco iscs iscu isic isis iso- isoc isos issc issi isso isss issu isus iucc iuiu iuss obbo obis oboi obos obss obus ocbc occc occi ocis ocos oici oiii oios oisc oisu oobi oooo ooos oosi oous oscc osci osco osii osis osoi osoo osos ossb ossi osso ossu oubs oucc ouii ouis ouu- s-ib s-ic s-ii s-os sbbs sbcc sbcs sbic sbsi sbus scbi sccc sccs sci- scic scio scis scob scoo scsc scsi scso scsu scub sibc sibi sibo sibs sibu sicc sici sico sics sicu sios siou sisc sisi siss sisu siui sius sobo sobs sobu soci soco socs soic sois soos sosi soso soss sous sscc ssci sscs ssis ssoc sssb sssc sssi ssss sub- subb subi subo subs suc- succ suci sucs suio suis suos sus- susi suso suss susu suus ubbi ubbo ubic ubii ubis uboc ubos ucbc ucci ucio ucos ucsb ucsc ucsu uocc usbc usbs uscc usco uscs usis usoc usoi usos ussb ussc usss ussu usui usus uuoc uusi uuuu