cccc cccl cccs cclc ccls ccoc ccrc ccrl ccrs ccsl ccss cloo clor clos clro clrs clsc coco col- coll colo cols cool coos cor- corc corl coro corr cors cosc cosl coso coss crcc crcr crls croc crol croo cror crss cscc cscl csco cscr cscs cslr csor csos csrc csrs cssr lccc lccs lcls lcor lcrl lcrs lcsc lcsr llcc llcs lllc llll lloc lloo locc loco locs loll lolo lols looc lool loor loos loro lors losc loso loss lrcs lroc lrrc lrrr ls-r lsco lscs lsrc lsso lssr occc oclc ocos ocrl ocro ocrr ocrs olcc ollo olor olos oocr oolo oooo ooos orco orcs orlo oro- oror oros orro orrs orso oscc oscl osco oslo osoo osor osos osro osso rccc rccs rcls rcos rcsc rcsl rcss rlcs rlls rocc roco rocs roll rolo rool roor roos rorc roro rosc roso ross rrrr rscc rscs rslc rsos rssl s-os sccc sccl sccs scl- sclc scls scol scoo scor scr- scrc scrs scsc scsl scso scsr slcc sloc sloo slos slrc slrs slsc socl soco socr socs soll solo solr sols sool soor soos soro sorr sors soso soss srcc sros sscc sscs sslc ssoc ssrc ssrl ssrs sssc ssss