cccc cccl cccp cccs cclc ccls ccoc ccpl ccpp ccpr ccps ccrc ccrl ccrp ccrs ccsl ccsp ccss cloo clop clor clos clpp clro clrs clsc coco cocp col- coll colo colp cols cool coop coos copo copp copr cops cor- corc corl coro corp corr cors cosc cosl coso cosp coss cpcs cplc cpls cpos cpps cprs cpsc cpsl cpso cpsr crcc crcr crls croc crol croo crop cror crpc crps crsp crss cscc cscl csco cscr cscs cslp cslr csor csos cspc csps csrc csrs cssr lccc lccs lcls lcor lcpc lcpl lcps lcrl lcrs lcsc lcsp lcsr llcc llcs lllc llll lloc lloo llps locc loco locs loll lolo lols looc lool loop loor loos lopp lops loro lors losc loso losp loss lppl lprp lpsc lpss lrcs lroc lrps lrrc lrrr ls-r lsco lscs lspl lspr lsrc lsso lssp lssr occc oclc ocos ocpp ocrl ocro ocrr ocrs olcc ollo olor olos olpc oocr oolo oooo ooos oops opls opo- opor opos oppo opps orco orcs orlo oro- oror oros orpc orps orro orrs orso oscc oscl osco oslo osoo osor osos osro osso pccc pccl pccs pcll pclo pcos pcpp pcps pcrc pcrl pcso plcc ploc ploo plop plos plpp plss poco pocs poll polo pols pool poop poor poos pop- popc popo popp pops porc poro porr pors poso poss ppcc ppcs pplo ppos pppo pppp ppps pprc ppss prcc prcp prcs prlr prls pro- proc prol proo prop pros prps prrs prsc prsl prso prss psco psoc psol psos pspp pspr psps psrp pssc psso rccc rccs rcls rcos rcpo rcps rcsc rcsl rcss rlcs rlls rocc roco rocs roll rolo rolp rool roop roor roos ropo rops rorc roro rosc roso rosp ross rpcs rpls rpos rpps rrrr rrsp rscc rscs rslc rslp rsos rspo rsps rssl s-os sccc sccl sccp sccs scl- sclc scls scol scoo scop scor scpl scpo scps scr- scrc scrs scsc scsl scso scsr slcc sllp sloc sloo slop slos slpp slps slrc slrp slrs slsc socl soco socr socs soll solo solp solr sols sool soop soor soos sopo sopp sops soro sorr sors soso soss spcc spco spcs splc splo splp splr spls spoc spoo spop spor spos spps spro sprs spso spsp spss srcc sros srpc srps srsp sscc sscp sscs sslc sslp ssoc ssop sspc sspl sspo ssps ssrc ssrl ssrs sssc ssss