bbbb bbbs bbdd bbdo bbrc bcbc bcbs bccc bccs bcds bcor bcos bcrs bcsc bcss bd-r bdbc bddc bdos bdsd bobb bobo bobs boco bocs bodb bodo bods boob booc bood boor boos bor- bord boro borr bors bosc boso boss brcb brdo brds brob broc brod broo bror bros brrr brrs brsb brsr bsbd bscs bsod bsos bsrd bssc bssd c-bo c-cd cbbc cbbs cbcc cbcr cbcs cbdb cbdc cbdo cbds cbrd cbsc ccbc cccb cccc cccs ccdc ccdr ccds ccob ccoc ccod ccrc ccrs ccsd ccss cd-r cdcs cddb cddr cdos cdrs cdss cobb cobo cobs coco codd cods coob cood coos cor- corb corc cord coro corr cors cosc coso coss crbc crcc crcr crdc crob croc crod croo cror crss cscb cscc cscd csco cscr cscs csdb csdr csob csor csos csrc csrd csrs cssd cssr d-bo dbcc dbcs dbos dbrs dbss dcbc dccb dccc dccs dcdb dcds dcos dcsc dcss dddd ddoc ddrc ddss dobb dobs doco docs dod- dodd dodo dods doob dood door doos dorc dord doro dorr dors doso doss drbc drob drod drrs dsbc dscc dscr dscs dsdr dsos dsrc dsrr dssc obbo obor obos obro obsd obsr obss ocbc occc ocds ocos ocro ocrr ocrs odbo oddd odds odoo odor odos odso oocr oooo ooos oord orbb orbo orbs orco orcs ordo ords oro- oror oros orro orrs orso oscc osco osoo osor osos osrd osro ossb ossd osso rbbb rbbr rbbs rbds rbsd rbss rcbc rcbo rccb rccc rccs rcdc rcds rcos rcrd rcsc rcsd rcss rdoc rdos rdso rob- robb robo robs rocc roco rocs rodd rodo rods roob rood roor roos rorc roro rosc roso ross rrrr rscc rscs rsdd rsds rsos s-os sbbs sbcc sbcs sbds sbor sbsd sccc sccs scdc scds scob scoo scor scr- scrc scrs scsc scsd scso scsr sdcc sdco sddc sdds sdrc sdrs sdsc sdss sobo sobr sobs soco socr socs sodd sodo sods sood soor soos sorb sord soro sorr sors soso soss srbc srcc sros srsd ssbr sscc sscs ssdc ssdd ssoc ssrc ssrs sssb sssc ssss