-ous bbbb bbbs bbfc bcbc bcbs bccc bccs bcfc bcof bcos bcsc bcss bcuc bfcs bffs bobb bobo bobs bobu boco bocs bocu boff bofs bofu boob booc boof boos bosc boso boss bosu bouf bous bscs bsfc bsff bsfs bsos bssc bubb bubo bubs bubu bucc buco bucs bucu bufc buff bufo busc buss busu buus c-bo cbbc cbbs cbcc cbcs cbcu cbfb cbfc cbsc cbus ccbc cccb cccc cccf cccs cccu ccfc ccff ccob ccoc ccsf ccss ccuc ccus cfbc cfbs cfcb cfcf cfco cfcs cffb cfos cobb cobo cobs cobu coco cocu cofc coff cofs coob coof coos cosc coso coss coub cous csbf cscb cscc cscf csco cscs csfc csob csos csuf csus cub- cubb cubs cucc cufc cuff cufo cusb cuso cuss cusu fbus fcbs fccf fcsc ffcc ffff ffss fobs foco focs fofo foof foos fosb foso foss fous fscb fscc fsfo fssc fssf fubb fubs fubu fuc- fufc fuff fufu fusc fuso fuss fusu obbo obos obss obus ocbc occc ocos off- offc offo offs offu ofus ooff oofs oooo ooos oous oscc osco osoo osos ossb osso ossu oubs oucc oufc ouff ouu- s-os sbbs sbcc sbcs sbfc sbus sccc sccs scfc scob scoo scsc scso scsu scub sfbc sfcc sfco sfcs sffc sfos sfss sfsu sobo sobs sobu soco socs sofo soof soos soso soss souf sous sscc sscs ssfc ssoc sssb sssc sssf ssss sub- subb subo subs suc- succ sucs suf- sufc suff sufs sufu suos sus- suso suss susu suus ubbo uboc ubos ucbc ucfb ucos ucsb ucsc ucsf ucsu ufcu ufos uocc uofo usbc usbs uscc uscf usco uscs usfc usfs usoc usos ussb ussc ussf usss ussu usus uuoc uuuu