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 cftl clof cloo clos clot clsc cltc clts coco coct cofc coff cofs coft col- coll colo cols colt coof cool coos coot cosc cosl coso coss cost cotc coto cots cott cscc cscf cscl csco cscs csfc csos csot cstc csto csts ctcf ctfc ctfo ctfs ctls ctol ctos ctot ctsc ctss ctts fccf fcot fcsc fcsl fcst fcto ffcc ffff ffss fftf flcl floc floo flos flot flts foco focs fofo folc foll folo fols folt foof fool foos foot foso foss fost foto fots fott fscc fsfo fssc fssf ft-c ft-l ftfc ftos lccc lccs lcfc lcls lcsc lctl lcto lcts lfcc lfts llcc llcs lllc llll lloc lloo locc loco locs loff loft loll lolo lols looc loof lool loos loot losc loso loss lost lotl loto lots lott lsco lscs lsfc lsof lsso lsts ltcc ltcs ltfc lttc occc occt oclc ocos oct- octo octs ofcl off- offc offo offs ofst 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 otoo otos otso otto otts s-os sccc sccl sccs scct scfc scl- sclc scls scol scoo scot scsc scsl scso scst sctc sctl scto scts sfcc sfco sfcs sffc sflc sfls sfos sfss sfts slcc slft sloc sloo slos slot slsc slst slts socl soco socs sofo soft solf soll solo sols solt soof sool soos soot soso soss sost sotc sotl soto sots sscc sscs ssfc ssfl sslc sslt ssoc ssot sssc sssf ssss sstc sstl ssts stcc stcs stfc stlc stlo stlt stof stol stoo stos stot stsf stss sttc tccc tcfc tcos tctc tcts tfot tfss tftc tlco tlos toco toff tofo toft tol- toll tolo tolt toof tool toos toot tosc toso toss tost totc toto tots tott tscc tsfc tsfl tsol tsos tssf tsst tstc tsts ttfc ttff ttss tttt