cccc cccf cccp cccs ccfc ccff ccoc ccpp ccps ccsf ccsp ccss ccst cctc cctt cfcf cfco cfcs cfos cfpo cfps cftc coco cocp coct cofc coff cofs coft coof coop coos coot copo copp cops copt cosc coso cosp coss cost cotc coto cots cott cpcs cpff cpft cpos cpps cpsc cpso cptp cpts cscc cscf csco cscs csfc csos csot cspc csps cspt cstc csto csts ctcf ctcp ctfc ctfo ctfs ctos ctot ctpo ctpp ctps ctsc ctss ctts fccf fccp fcot fcps fcsc fcst fcto ffcc ffff ffps ffss fftf foco focs fofo foof foos foot fopp fops foso foss fost foto fotp fots fott fp-c fpcc fpct fscc fsfo fspc fspf fssc fssf fssp ft-c ftfc ftop ftos ftps occc occt ocfp ocos ocpp oct- octo octs off- offc offo offs ofst oftp ooff oofs oooo ooos oops oost ootp oots opo- opos oppo opps opto opts oscc osco osoo osos osso ostc osts otfc otfp oto- otof otoo otos otpp otso otto otts pccc pccs pcfc pcos pcpp pcps pcso pcts pfcs pfff pfft pfps poco pocs poff poof poop poos poot pop- popc popo popp pops popt poso poss post potc potf poto pots pott ppcc ppcs ppos pppo pppp ppps ppsf ppss ppts pptt psco psfs psoc psos pspp psps pssc psso psst psts ptcc ptop pttc s-os sccc sccp sccs scct scfc scoo scop scot scpo scps scpt scsc scso scst sctc scto scts sfcc sfco sfcs sffc sfos sfpc sfss sftp sfts soco socs sofo soft soof soop soos soot sopo sopp sops soso soss sost sotc soto sotp sots spcc spco spcs spfc spfs spoc spoo spop spos spot sppf spps spso spsp spss spst sptc spto spts sscc sscp sscs ssfc ssfp ssoc ssop ssot sspc sspf sspo ssps sspt sssc sssf ssss sstc sstp ssts stcc stcp stcs stfc stof stoo stop stos stot stpf stpp stps stsf stss sttc tccc tcfc tcos tcpo tctc tcts tfot tfpt tfss tftc tftp toco toff tofo toft toof toos toot top- topf topo topp tops topt tosc toso toss tost totc toto tots tott tpcp tpcs tppp tpsc tptp tscc tscp tsfc tsop tsos tspo tsps tspt tssf tsst tstc tsts ttcp ttfc ttff ttop ttss tttt