-ous cccc cccs cccu ccoc ccrc ccrs ccss ccuc ccus coco cocu coos cor- corc coro corr cors cosc coso coss cour cous crcc crcr croc croo cror crss crus cscc csco cscr cscs csor csos csrc csrs cssr csur csus cucc curo curr curs cuso cuss cusu occc ocos ocro ocrr ocrs ocur oocr oooo ooos oous orco orcs oro- oror oros orro orrs orso orsu orus oscc osco osoo osor osos osro osso ossu oucc our- ouro ours ouu- rccc rccs rcos rcsc rcss rocc roco rocs roor roos rorc roro roru rosc roso ross rous rrrr rscc rscs rsos rurc ruro rurs ruru ruso russ rusu s-os sccc sccs scoo scor scr- scrc scrs scsc scso scsr scsu scur soco socr socs soor soos soro sorr sors soru soso soss sour sous srcc sros sscc sscs ssoc ssrc ssrs sssc ssss suc- succ sucr sucs suor suos sur- surc suro surr surs suru sus- suso suss susu suus ucos ucrc ucsc ucsu uocc uor- uro- uroo urso urss ursu urur urus uscc usco uscs usoc usos ussc ussr usss ussu usus uuoc uuuu