cccc cccs ccoc ccrc ccrs ccss coco coos cor- corc coro corr cors cory cosc coso coss cosy coyo coyr coys crcc crcr croc croo cror croy crss cry- cryo crys cscc csco cscr cscs csor csos csrc csrs cssr csys cyc- cycc cycs cyrs cyy- cyyc occc ocos ocro ocrr ocrs ocys oocr oooo ooos oory orco orcs oro- oror oros oroy orro orrs orry orso orsy orys oscc osco osoo osor osos osro osso ossy oyss rccc rccs rcos rcsc rcss rcyc rocc roco rocs roor roos rorc roro rory rosc roso ross rosy roys rrrr rscc rscs rscy rsos rysy s-os sccc sccs sccy scoo scor scr- scrc scrs scry scsc scso scsr soco socr socs socy soor soos sooy soro sorr sors sory soso soss soyo soys srcc sros sscc sscs ssoc ssrc ssrs sssc ssss syco sycr syro syrs syry syso syss yccc yoro yory yoso yoyo ysco yyyy