-ous bbbb bbbs bbci bbdd bbdo bcbc bcbs bccc bcci bccs bcds bcis bcos bcsc bcss bcuc bdbc bddc bdii bdos bdsd bibb bibi bibo bibs bicc bici bico bics bidi bido bids bidu biis bio- bioc bioi bios biou bis- bisc bisd biso biss bisu bobb bobi bobo bobs bobu boco bocs bocu bodb bodi bodo bods bodu boi- boid boii bois boiu boob booc bood boos bosc bosi boso boss bosu boud bous bsbd bsci bscs bsic bsod bsos bssc bssd bubb bubi bubo bubs bubu bucc buci buco bucs bucu budb budd budi budo buds budu buic buid buis buiu busc busi buss busu buus c-bo c-cd cbbc cbbs cbcc cbcs cbcu cbdb cbdc cbdi cbdo cbds cbid cbsc cbsi cbus ccbc cccb cccc ccci cccs cccu ccdc ccdi ccds ccic ccid ccii ccis ccob ccoc ccod ccsd ccsi ccss ccuc ccus cdcs cddb cdic cdii cdio cdis cdos cdss cibc cibi cibo cicc cici cico cics cicu cidc cidi cids ciid ciii ciis ciob cios cis- cisc cisd ciss ciuc cius cobb cobi cobo cobs cobu coco cocu codd codi cods cois coob cood coos cosc cosi coso coss coub coud cous cscb cscc cscd csci csco cscs csdb csib csid csio csis csob csos cssd csus cub- cubb cubi cubs cucc cuci cudi cuds cui- cuis cusb cusd cuso cuss cusu d-bo dbcc dbcs dbos dbss dbus dcbc dccb dccc dcci dccs dccu dcdb dcds dcii dcio dcis dcos dcsc dcss dddd ddoc ddss ddub dibb dibo dibs dici dico didi dido dids didu diii diis dioc dios diou dis- disc disd disi diso diss dius dobb dobi dobs dobu doci doco docs docu dod- dodd dodi dodo dods doid dois doob dood doos dosi doso doss doub douc doud dous dsbc dscc dscs dsos dssc dssi dub- dubb dubc dubs dubu duco ducs dudd dudo duds dudu duid duis duo- duos dusi ibcs ibdo ibid ibis ibos ibss ibus icbc icbd icbs iccb iccc icci icco iccs iccu icdc icdd icis icoc icod icos icsb icsc icsd icsi icss icub icus iddo idic idid idio idis idoc idos idsc idso idss idub iduo idus iicd iiii iiio iiis iioi iioo iios iisc iisd iisi iisu iiuc iobi ioci iod- iodd iodo ioii ioio iooi iooo ioos ioso iosu ious isbd iscc iscd isci isco iscs iscu isdb isdc isds isic isis iso- isoc isos issc issi isso isss issu isus iucc iuds iuiu iusd iuss obbo obid obis oboi obos obsd obss obus ocbc occc occi ocds ocis ocos odbo odci oddd oddi odds odic odio odis odiu odoo odos odou odso odus oici oido oids oiii oios oisc oisd oisu oobi oodi ooid oooo ooos oosi oous oscc osci osco osdi osii osis osoi osoo osos ossb ossd ossi osso ossu oubs oucc oudc ouds ouii ouis ousd ouu- s-ib s-ic s-ii s-os sbbs sbcc sbcs sbds sbic sbsd sbsi sbus scbi sccc sccs scdc scds sci- scic scid scio scis scob scoo scsc scsd scsi scso scsu scub scud sdcc sdco sddc sdds sdib sdic sdio sdsc sdss sdsu sibc sibi sibo sibs sibu sicc sici sico sics sicu sidd sidi sido sids siod sios siou sisc sisd sisi siss sisu siui sius sobo sobs sobu soci soco socs sodd sodo sods sodu soic sois sood soos sosi soso soss soud sous sscc ssci sscs ssdc ssdd ssid ssis ssoc sssb sssc sssi ssss sub- subb subd subi subo subs suc- succ suci sucs sudd sudi sudo suds suid suio suis suos sus- susd susi suso suss susu suus ubbi ubbo ubic ubid ubii ubis uboc ubod ubos ubud ucbc ucci ucdc ucdd ucio ucos ucsb ucsc ucsd ucsu udbc uddi udds udic udid udoo udos udsd uisd uocc usbc usbs uscc usco uscs usdc usdo usds usis usoc usoi usos ussb ussc usss ussu usui usus uuoc uusi uuuu