cccc cccl cccp cccs cclc ccls ccoc ccpl ccpp ccpr ccps ccrc ccrl ccrp ccrs ccsl ccsp ccss ckck ckcl ckco ckcs ckoc ckoo ckor ckos ckpc ckpr ckrc cksl ckso clok cloo clop clor clos clpp clro clrs clsc cock coco cocp cok- coko col- colk coll colo colp cols cook cool coop coos copo copp copr cops cor- corc cork corl coro corp corr cors cosc cosl coso cosp coss cpcs cplc cpls cpos cpps cprs cpsc cpsk cpsl cpso cpsr crcc crcr crkc crkl crkp crls croc crok crol croo crop cror crpc crps crsp crss cscc cscl csco cscr cscs csks cslp cslr csor csos cspc csps csrc csrs cssr k-lo k-os kccc kcck kccl kccr kckc kckk kckl kcko kckr kclc kclk kcll kclr kcls kcol kcor kcos kcpc kcpl kcpo kcpr kcps kcrc kcro kcrp kcrr kcrs kcsc kcsp kcsr kcss kkck kkcl kkco kkcr kkcs kkkk kklc kkll kklo kkls kkol kkoo kkor kkpc kkpk kkpl kkps kkrc kkrk kkrl kkro kkrr kkrs kksp kksr kkss klcc klck klcl klcr klcs klkc klkk klkl klko klkr klks kllc kllk kllp klls kloc klok klol kloo klop klor klos klpc klpr klrc klrk klrr klrs klsc klsr kock kocp kocs kokc kokk koko kokp kokr koks kolc kolk koll kolo kolr kols kooc kook kool kooo koop koor koos kopp kopr kops korc kork korl koro korr kors kos- kosc koso kosp kosr koss kpcc kpcl kpcr kpcs kpkk kpkl kpkr kplc kplk kplo kplr kpoc kpok kpol kpoo kpop kppc kppk kppl kppo kppp kppr kprc kprk kprl kpro kprp kprr kprs kpsc kpso kpsp krcc krcl krco krcs krkc krkk krko krkr krks krlc kroc krok krol kroo krop kror kros krpl krpr krps krrc krrk krrl krro krrr krrs krsc krsk krsl krsr krss ksck kscl ksco kscr kscs kskk ksko kskr ksks kslc kslk ksll kslo kslr ksoc ksok ksol ksoo ksop ksor ksos kspc kspk kspl kspo kspr ksps ksro ksrp ksrr ksrs kssl ksso kssr ksss lccc lccs lcls lcor lcpc lcpl lcps lcrl lcrs lcsc lcsp lcsr lkrs llcc llcs llks lllc llll lloc lloo llps locc lock loco locs lokk loko loll lolo lols looc look lool loop loor loos lopp lops lork 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 ocks oclc ocos ocpp ocrl ocro ocrr ocrs okko oklo okok okol okor okpo okro okso olcc ollo olor olos olpc oocr oolo oooo ooos oops opls opo- opor opos oppo opps orco orcs orko orlo oro- orok oror oros orpc orps orro orrs orsk orso oscc oscl osco oslo osoo osor osos osro osso pccc pccl pccs pcks pclk pcll pclo pcos pcpp pcps pcrc pcrl pcso pkcs pklr plcc plkk ploc plok ploo plop plos plpp plss pock poco pocs poko polk poll polo pols pook pool poop poor poos pop- popc popo popp pops porc pork poro porr pors posk 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 psrk psrp pssc psso rccc rccs rcls rcos rcpo rcps rcsc rcsl rcss rkos rkss rlcs rlls rocc rock roco rocs rokk roko rokr roks rolk roll rolo rolp rook rool roop roor roos ropo rops rorc rork roro rosc roso rosp ross rpcs rpls rpos rpps rrrr rrsp rscc rscs rslc rslp rsos rspk rspo rsps rssl s-os sccc sccl sccp sccs sck- sckl scl- sclc sclk scls scok scol scoo scop scor scpl scpo scps scr- scrc scrs scsc scsl scso scsr skol skop skor skpc skpo skss slcc sllp sloc sloo slop slos slpp slps slrc slrp slrs slsc sock socl soco socr socs sokk soko solk soll solo solp solr sols sook sool soop soor soos sopo sopp sops soro sorr sors soso soss spcc spco spcs spkl spkr splc splo splp splr spls spoc spok 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