cccc ccci cccs ccic ccii ccir ccis ccoc ccrc ccri ccrs ccsi ccss cicc cici cico cicr cics ciii ciis cior cios circ ciri ciro cirr cirs cis- cisc cisr ciss coco coir cois coos cor- corc cori coro corr cors cosc cosi coso coss crcc crcr cric cris croc croo cror crss cscc csci csco cscr cscs csio csir csis csor csos csrc csrs cssr iccc icci icco iccr iccs icis icoc icor icos icrc icrr icrs icsc icsi icsr icss iiii iiio iiis iioi iioo iios iirc iirs iisc iisi iisr ioci ioii ioio iooi iooo ioos iori iors ioso ircc ircs iri- iric irio iris iroc irrc irri irrs iscc isci isco iscr iscs isic isis iso- isoc isor isos isri issc issi isso issr isss occc occi ocis ocos ocro ocrr ocrs oici oiii oios oisc oocr oooo ooos oosi orci orco orcs ori- oric orio oris oro- oror oros orri orro orrs orsi orso oscc osci osco osii osis osoi osoo osor osos osro ossi osso rccc rccs rcic rcis rcos rcsc rcsi rcss ricc rico rics riis rios riri rirs risc risi riso riss rocc roco rocs roio roir rois rooi roor roos rorc rori roro rosc rosi roso ross rrrr rscc rscs rsis rsos s-ic s-ii s-os sccc sccs sci- scic scio scir scis scoo scor scr- scrc scri scrs scsc scsi scso scsr sicc sici sico sics sior sios sirc siri siro sirr sirs sisc sisi siss soci soco socr socs soic soir sois soor soos sori soro sorr sors sosi soso soss srcc sris sros sscc ssci sscs ssis ssoc ssrc ssri ssrs sssc sssi ssss