cccc cccp cccs ccoc ccpp ccps ccsp ccss ccst cctc cctt coco cocp coct coop coos coot copo copp cops copt cosc coso cosp coss cost cotc coto cots cott cpcs cpos cpps cpsc cpso cptp cpts cscc csco cscs csos csot cspc csps cspt cstc csto csts ctcp ctos ctot ctpo ctpp ctps ctsc ctss ctts occc occt ocos ocpp oct- octo octs oooo ooos oops oost ootp oots opo- opos oppo opps opto opts oscc osco osoo osos osso ostc osts oto- otoo otos otpp otso otto otts pccc pccs pcos pcpp pcps pcso pcts poco pocs poop poos poot pop- popc popo popp pops popt poso poss post potc poto pots pott ppcc ppcs ppos pppo pppp ppps ppss ppts pptt psco psoc psos pspp psps pssc psso psst psts ptcc ptop pttc s-os sccc sccp sccs scct scoo scop scot scpo scps scpt scsc scso scst sctc scto scts soco socs soop soos soot sopo sopp sops soso soss sost sotc soto sotp sots spcc spco spcs spoc spoo spop spos spot spps spso spsp spss spst sptc spto spts sscc sscp sscs ssoc ssop ssot sspc sspo ssps sspt sssc ssss sstc sstp ssts stcc stcp stcs stoo stop stos stot stpp stps stss sttc tccc tcos tcpo tctc tcts toco toos toot top- topo topp tops topt tosc toso toss tost totc toto tots tott tpcp tpcs tppp tpsc tptp tscc tscp tsop tsos tspo tsps tspt tsst tstc tsts ttcp ttop ttss tttt