cccc cccf cccp cccs ccfc ccff ccoc ccpp ccpr ccps ccrc ccrf ccrp ccrs ccsf ccsp ccss cfcf cfco cfcs cffr cfor cfos cfpo cfpr cfps cfrp coco cocp cofc coff cofs coof coop coos copo copp copr cops cor- corc corf coro corp corr cors cosc coso cosp coss cpcs cpff cpos cpps cprs cpsc cpso cpsr crcc crcr crfc crfs croc croo crop cror crpc crps crsp crss cscc cscf csco cscr cscs csfc csfr csor csos cspc csps csrc csrs cssr fccf fccp fcps fcsc ffcc ffff ffps ffrr ffss foco focs fofo foof foos fopp fops for- foro forr fors foso foss fp-c fpcc fprf frcc frcp frfc frop fros frps frsc frso fscc fsfo fspc fspf fssc fssf fssp occc ocfp ocos ocpp ocro ocrr ocrs ofcr off- offc offo offr offs ofor oocr ooff oofs oooo ooos oops opo- opor opos oppo opps orco orcs orff orfs oro- orof oror oros orpc orps orro orrs orso oscc osco osoo osor osos osro osso pccc pccs pcfc pcos pcpp pcps pcrc pcrf pcso pfcs pfff pffr pfps poco pocs poff poof poop poor poos pop- popc popo popp pops porc poro porr pors poso poss ppcc ppcs ppos pppo pppp ppps pprc pprf ppsf ppss prcc prcf prcp prcs prfc prfs pro- proc prof proo prop pros prps prrs prsc prso prss psco psfs psoc psos pspp pspr psps psrp pssc psso rccc rccs rcfc rcos rcpo rcps rcsc rcss rffc rocc roco rocs rofc roff rofo roof roop roor roos ropo rops rorc roro rosc roso rosp ross rpcs rpfc rpof rpos rpps rrfc rrrr rrsp rscc rscs rsfc rsos rspo rsps s-os sccc sccp sccs scfc scoo scop scor scpo scps scr- scrc scrs scsc scso scsr sfcc sfco sfcs sffc sfor sfos sfpc sfrc sfro sfss soco socr socs sofo soof soop soor soos sopo sopp sops soro sorr sors soso soss spcc spco spcs spfc spfs spoc spoo spop spor spos sppf spps spro sprs spso spsp spss srcc srfc sros srpc srps srsp sscc sscp sscs ssfc ssfp ssoc ssop sspc sspf sspo ssps ssrc ssrs sssc sssf ssss