cccc cccp cccs ccoc ccpp ccpr ccps ccrc ccrp ccrs ccrt ccsp ccss ccst cctc cctt coco cocp coct coop coos coot copo copp copr cops copt cor- corc coro corp corr cors cort cosc coso cosp coss cost cotc coto cots cott cpcs cpos cpps cprs cprt cpsc cpso cpsr cptp cptr cpts crcc crcr croc croo crop cror crot crpc crps crrt crsp crss crst crtc crtp crts cscc csco cscr cscs csor csos csot cspc csps cspt csrc csrs cssr cstc csto cstr csts ctcp ctor ctos ctot ctpo ctpp ctps ctrc ctrp ctrs ctsc ctss ctts occc occt ocos ocpp ocro ocrr ocrs oct- octo octs oocr oooo ooos oops oort oost ootp oots opo- opor opos oppo opps opto opts orco orcs oro- oror oros orot orpc orps orro orrs orso ortc orto orts oscc osco osoo osor osos osro osso ostc ostr osts oto- otoo otor otos otpp otro otrs otso otto otts pccc pccs pcos pcpp pcps pcrc pcso pcts poco pocs poop poor poos poot pop- popc popo popp pops popt porc poro porr pors port poso poss post potc poto pots pott ppcc ppcs ppos pppo pppp ppps pprc ppss ppts pptt prcc prcp prcs pro- proc proo prop pros prot prps prrs prsc prso prss prtc prtp prtr psco psoc psos pspp pspr psps psrp pssc psso psst psts ptcc ptop pttc rccc rccs rcos rcpo rcps rcpt rcsc rcss rctc rcts rocc roco rocs roop roor roos root ropo rops rorc roro rort rosc roso rosp ross rost rotc roto rotr rots rott rpcs rpos rpps rpts rrrr rrsp rscc rscs rsos rspo rsps rstp rsts rtcc rtps rtss rttp rtts s-os sccc sccp sccs scct scoo scop scor scot scpo scps scpt scr- scrc scrs scsc scso scsr scst sctc scto sctr scts soco socr socs soop soor soos soot sopo sopp sops soro sorr sors sort soso soss sost sotc soto sotp sots spcc spco spcs spoc spoo spop spor spos spot spps spro sprs spso spsp spss spst sptc spto sptr spts srcc srct sros srpc srps srpt srsp srtp srtr sscc sscp sscs ssoc ssop ssot sspc sspo ssps sspt ssrc ssrs sssc ssss sstc sstp ssts stcc stcp stcs stoo stop stor stos stot stpp stps strc stro strs stss sttc sttr tccc tcos tcpo tctc tcts toco toor toos toot top- topo topp tops topt torc toro torp torr tors tort tosc toso toss tost totc toto totr tots tott tpcp tpcs tppp tppr tprs tpsc tptp tptr trcc troc troo trop tros trot trpc trpp trps trst trtc trtr tscc tscp tsop tsos tspo tsps tspt tssr tsst tstc tsts ttcp ttop ttss tttt