cccc cccf cccl cccs ccfc ccff ccfl cclc ccls ccoc ccsf ccsl ccss ccst cctc cctl cctt cfcf cfcl cfco cfcs cfls cfos cfsl cftc cftk cftl ckck ckcl ckco ckcs cklf ckoc ckoo ckos ckot cksl ckso ckst ckts clof clok cloo clos clot clsc cltc clts cock coco coct cofc coff cofs coft cok- coko col- colk coll colo cols colt coof cook cool coos coot cosc cosl coso coss cost cotc coto cots cott cscc cscf cscl csco cscs csfc csks csos csot cstc csto csts ctcf ctfc ctfo ctfs ctls ctol ctos ctot ctsc ctss ctts f--k fccf fcot fcsc fcsl fcst fcto ffcc ffff ffss fftf flcl floc flok floo flos flot fltk flts fock foco focs fofo folc folk foll folo fols folt foof fook fool foos foot foso foss fost foto fots fott fscc fsck fsfo fssc fssf ft-c ft-l ftfc ftos k-lo k-os kccc kcck kccl kcct kcfc kcfl kcfo kcft kckc kckf kckk kckl kcko kclc kclf kclk kcll kcls kclt kcof kcol kcos kcot kcsc kcsf kcss kcst kctc kcto kfcf kfco kfcs kfff kffk kflc kflf kfll kflo kfls kflt kfok kfoo kfsk kfst kftc kftk kftt kkck kkcl kkco kkcs kkct kkfs kkft kkkk kklc kklf kkll kklo kkls kkol kkoo kkot kksf kkss kkst kktc kktk kktl kkts klcc klck klcl klcs klfc klff klft klkc klkk klkl klko klks kllc kllk klls kloc klok klol kloo klos klsc klsf klst kltc kltf kltk klto kltt kocf kock kocs koct kofc koff kofk kofo koft kokc kokf kokk koko koks kolc kolf kolk koll kolo kols kolt kooc kook kool kooo koos koot kos- kosc kosf koso koss kost kotc kotk koto kots kott ksck kscl ksco kscs ksfc ksfo ksft kskf kskk ksko ksks kslc kslk ksll kslo kslt ksoc ksof ksok ksol ksoo ksos kssl ksso ksss ksst kstc kstk kstl ksto ksts kstt ktcc ktck ktcl ktco ktcs ktfc ktfl ktfo ktfs ktkc ktkk ktko ktks ktkt ktlf ktlk ktlo ktlt ktoc ktok ktoo ktot ktsc ktsf ktsl ktso ktst kttc kttf kttk ktto ktts kttt lccc lccs lcfc lcls lcsc lctl lcto lcts lfcc lfts lkfs llcc llcs llks lllc llll lloc lloo locc lock loco locs loff loft lokk loko loll lolo lols looc loof look lool loos loot losc loso loss lost lotl loto lots lott lsco lscs lsfc lsof lsso lsts ltcc ltcs ltfc lttc occc occt ocks oclc ocos oct- octo octs ofcl off- offc offo offs ofst okko oklo okok okol okot okso okto olcc olfs ollo olof olos olot olst ooff oofs oolo oooo ooos oost oots oscc oscl osco oslo osoo osos osso ostc osts otcl otfc oto- otof otok otoo otos otso otto otts s-os sccc sccl sccs scct scfc sck- sckl scl- sclc sclk scls scok scol scoo scot scsc scsl scso scst sctc sctl scto scts sfcc sfco sfcs sffc sflc sfls sfos sfss sfts skfc skol skot skss slcc slft sloc sloo slos slot slsc slst slts sock socl soco socs sofo soft sokk soko solf solk soll solo sols solt soof sook sool soos soot soso soss sost sotc sotk sotl soto sots sscc sscs ssfc ssfl sslc sslt ssoc ssot sssc sssf ssss sstc sstl ssts stcc stcs stfc stks stlc stlo stlt stof stok stol stoo stos stot stsf stss sttc tccc tcfc tcos tctc tcts tfot tfss tftc tkof tkol tkos tkts tlco tlos tock toco toff tofo toft toko tol- tolk toll tolo tolt toof took tool toos toot tosc tosk toso toss tost totc toto tots tott tscc tsfc tsfl tsks tsol tsos tssf tsst tstc tsts ttfc ttff ttss tttt