-ous bbbb bbbs bbdd bbdo bcbc bcbs bccc bccs bcds bcos bcsc bcss bcuc bdbc bddc bdos bdsd bobb bobo bobs bobu boco bocs bocu bodb bodo bods bodu boob booc bood boos bosc boso boss bosu boud bous bsbd bscs bsod bsos bssc bssd bubb bubo bubs bubu bucc buco bucs bucu budb budd budo buds budu busc buss busu buus c-bo c-cd cbbc cbbs cbcc cbcs cbcu cbdb cbdc cbdo cbds cbsc cbus ccbc cccb cccc cccs cccu ccdc ccds ccob ccoc ccod ccsd ccss ccuc ccus cdcs cddb cdos cdss cobb cobo cobs cobu coco cocu codd cods coob cood coos cosc coso coss coub coud cous cscb cscc cscd csco cscs csdb csob csos cssd csus cub- cubb cubs cucc cuds cusb cusd cuso cuss cusu d-bo dbcc dbcs dbos dbss dbus dcbc dccb dccc dccs dccu dcdb dcds dcos dcsc dcss dddd ddoc ddss ddub dobb dobs dobu doco docs docu dod- dodd dodo dods doob dood doos doso doss doub douc doud dous dsbc dscc dscs dsos dssc dub- dubb dubc dubs dubu duco ducs dudd dudo duds dudu duo- duos obbo obos obsd obss obus ocbc occc ocds ocos odbo oddd odds odoo odos odou odso odus oooo ooos oous oscc osco osoo osos ossb ossd osso ossu oubs oucc oudc ouds ousd ouu- s-os sbbs sbcc sbcs sbds sbsd sbus sccc sccs scdc scds scob scoo scsc scsd scso scsu scub scud sdcc sdco sddc sdds sdsc sdss sdsu sobo sobs sobu soco socs sodd sodo sods sodu sood soos soso soss soud sous sscc sscs ssdc ssdd ssoc sssb sssc ssss sub- subb subd subo subs suc- succ sucs sudd sudo suds suos sus- susd suso suss susu suus ubbo uboc ubod ubos ubud ucbc ucdc ucdd ucos ucsb ucsc ucsd ucsu udbc udds udoo udos udsd uocc usbc usbs uscc usco uscs usdc usdo usds usoc usos ussb ussc usss ussu usus uuoc uuuu