cccc cccl cccp cccs cclc ccls ccoc ccpl ccpp ccps ccsl ccsp ccss ccst cctc cctl cctt cloo clop clos clot clpp clsc cltc clts coco cocp coct col- coll colo colp cols colt cool coop coos coot copo copp cops copt cosc cosl coso cosp coss cost cotc coto cots cott cpcs cplc cpls cpos cpps cpsc cpsl cpso cptp cpts cscc cscl csco cscs cslp csos csot cspc csps cspt cstc csto csts ctcp ctls ctol ctos ctot ctpo ctpp ctps ctsc ctss ctts lccc lccs lcls lcpc lcpl lcps lcsc lcsp lctl lcto lcts llcc llcs lllc llll lloc lloo llps locc loco locs loll lolo lols looc lool loop loos loot lopp lops losc loso losp loss lost lotl loto lots lott lppl lpsc lpss lsco lscs lspl lsso lssp lsts ltcc ltcs ltps ltsp lttc occc occt oclc ocos ocpp oct- octo octs olcc ollo olos olot olpc olst oolo oooo ooos oops oost ootp oots opls opo- opos oppo opps opto opts oscc oscl osco oslo osoo osos osso ostc osts otcl oto- otoo otos otpp otso otto otts pccc pccl pccs pcll pclo pcos pcpp pcps pcso pcts plcc ploc ploo plop plos plot plpp plss pltt poco pocs poll polo pols polt pool poop poos poot pop- popc popo popp pops popt poso poss post potc poto pots pott ppcc ppcs pplo ppos pppo pppp ppps ppss ppts pptt psco psoc psol psos pspp psps pssc psso psst psts ptcc ptcl ptol ptop pttc s-os sccc sccl sccp sccs scct scl- sclc scls scol scoo scop scot scpl scpo scps scpt scsc scsl scso scst sctc sctl scto scts slcc sllp sloc sloo slop slos slot slpp slps slsc slst slts socl soco socs soll solo solp sols solt sool soop soos soot sopo sopp sops soso soss sost sotc sotl soto sotp sots spcc spco spcs splc splo splp spls spoc spoo spop spos spot spps spso spsp spss spst sptc spto spts sscc sscp sscs sslc sslp sslt ssoc ssop ssot sspc sspl sspo ssps sspt sssc ssss sstc sstl sstp ssts stcc stcp stcs stlc stlo stlt stol stoo stop stos stot stpp stps stss sttc tccc tcos tcpo tctc tcts tlco tlos toco tol- toll tolo tolt tool toos toot top- topo topp tops topt tosc toso toss tost totc toto tots tott tpcp tpcs tpls tpol tppp tpsc tptp tscc tscp tsol tsop tsos tspo tsps tspt tsst tstc tsts ttcp ttop ttss tttt