cccc ccci cccs ccic ccii ccis ccoc ccsi ccss cicc cici cico cics ciii ciis cios cis- cisc ciss cisy coco cois coos cosc cosi coso coss cosy coyo coys cscc csci csco cscs csio csis csos csys cyc- cycc cycs cyy- cyyc iccc icci icco iccs icis icoc icos icsc icsi icss iiii iiio iiis iioi iioo iios iisc iisi ioci ioii ioio iooi iooo ioos ioso iscc isci isco iscs isic isis iso- isoc isos issc issi isso isss issy isys iyos occc occi ocis ocos ocys oici oiii oios oisc oooo ooos oosi oscc osci osco osii osis osoi osoo osos ossi osso ossy oyss s-ic s-ii s-os sccc sccs sccy sci- scic scio scis scoo scsc scsi scso sicc sici sico sics sios sisc sisi siss sisy siyi soci soco socs socy soic sois soos sooy sosi soso soss soyo soys sscc ssci sscs ssis ssoc sssc sssi ssss syco syis syso syss yccc yiss yosi yoso yoyo ysco ysii yyyy