cccc cccl cccs cclc ccls ccoc ccrc ccrl ccrs ccrt ccsl ccss ccst cctc cctl cctt cloo clor clos clot clro clrs clsc cltc clts coco coct col- coll colo cols colt cool coos coot cor- corc corl coro corr cors cort cosc cosl coso coss cost cotc coto cots cott crcc crcr crls croc crol croo cror crot crrt crss crst crtc crtl crts cscc cscl csco cscr cscs cslr csor csos csot csrc csrs cssr cstc csto cstr csts ctls ctol ctor ctos ctot ctrc ctrl ctrs ctsc ctss ctts lccc lccs lcls lcor lcrl lcrs lcsc lcsr lctl lcto lcts llcc llcs lllc llll lloc lloo locc loco locs loll lolo lols looc lool loor loos loot loro lors losc loso loss lost lotl loto lotr lots lott lrcs lroc lrrc lrrr lrst lrts ls-r lsco lscs lsrc lsso lssr lsts ltcc ltcs ltrs ltsr lttc lttr occc occt oclc ocos ocrl ocro ocrr ocrs oct- octo octs olcc ollo olor olos olot olst oocr oolo oooo ooos oort oost oots orco orcs orlo oro- oror oros orot orro orrs orso ortc orto orts oscc oscl osco oslo osoo osor osos osro osso ostc ostr osts otcl oto- otoo otor otos otro otrs otso otto otts rccc rccs rcls rcos rcsc rcsl rcss rctc rcts rlcs rlls rocc roco rocs roll rolo rolt rool roor roos root rorc roro rort rosc roso ross rost rotc rotl roto rotr rots rott rrrr rscc rscs rslc rsos rssl rsts rtcc rtls rtlt rtss rtts s-os sccc sccl sccs scct scl- sclc scls scol scoo scor scot scr- scrc scrs scsc scsl scso scsr scst sctc sctl scto sctr scts slcc sloc sloo slos slot slrc slrs slsc slst slts socl soco socr socs soll solo solr sols solt sool soor soos soot soro sorr sors sort soso soss sost sotc sotl soto sots srcc srct sros srtr sscc sscs sslc sslt ssoc ssot ssrc ssrl ssrs sssc ssss sstc sstl ssts stcc stcs stlc stlo stlt stol stoo stor stos stot strc stro strs stss sttc sttr tccc tcos tctc tcts tlco tlos tlrs toco tol- toll tolo tolt tool toor toos toot torc toro torr tors tort tosc toso toss tost totc toto totr tots tott trcc trcl troc troo tros trot trst trtc trtr tscc tsol tsos tssr tsst tstc tsts ttss tttt