cccc cccf cccs ccfc ccff ccoc ccow ccrc ccrf ccrs ccrt ccsf ccss ccst cctc cctt cfcf cfco cfcs cfcw cffr cfor cfos cfrt cfrw cftc cftr cfwc coco coct cofc coff cofs coft coof coos coot cor- corc corf coro corr cors cort cosc coso coss cost cotc coto cots cott cotw cows cowt crcc crcr crfc crfs croc croo cror crot crow crrt crss crst crtc crtf crts cscc cscf csco cscr cscs csfc csfr csor csos csot csrc csrs cssr cstc csto cstr csts csws ctcf ctfc ctfo ctfs ctor ctos ctot ctrc ctrs ctsc ctss ctts cttw cwfc cwos cwot cwrw cwsf cwts fccf fcot fcsc fcst fcto ffcc ffff ffrr ffss fftf fftw foco focs fofo foof foos foot for- foro forr fors fort foso foss fost foto fots fott fotw frcc frfc fros frot frow frsc frso frst fscc fsfo fssc fssf ft-c ftfc ftos ftrs ftsr fttw ftwo fwcc fwfc occc occt ocos ocro ocrr ocrs ocsw oct- octo octs ofcr off- offc offo offr offs ofor ofst oocr ooff oofs oooo ooos oort oost oots ootw orco orcs orff orfs oro- orof oror oros orot orro orrs orso ortc orto orts orwo oscc osco osoo osor osos osow osro osso ostc ostr osts otfc oto- otof otoo otor otos otow otro otrs otso otto otts otwo owow owt- owtt rccc rccs rcfc rcos rcsc rcss rctc rcts rffc rftc rocc roco rocs rofc roff rofo roof roor roos root rorc roro rort rosc roso ross rost rotc roto rotr rots rott rowf rowr rows rowt roww rrfc rrrr rscc rscs rsfc rsos rsts rtcc rtfc rtss rtts rwcs s-os sccc sccs scct scfc scoo scor scot scow scr- scrc scrs scsc scso scsr scst sctc scto sctr scts sfcc sfco sfcs sfcw sffc sfor sfos sfrc sfro sfss sfts soco socr socs sofo soft soof soor soos soot soro sorr sors sort soso soss sost sotc soto sots sotw sowf sowr sows sowt srcc srct srfc sros srtr sscc sscs ssfc ssoc ssot ssrc ssrs sssc sssf ssss sstc ssts ssws stcc stcs stfc stfw stof stoo stor stos stot stow strc stro strs stsf stss sttc sttr swcc swfc swoo swor swot swow swss swts tccc tcfc tcos tctc tcts tfot tfrs tfss tftc toco toff tofo toft toof toor toos toot torc torf toro torr tors tort tosc toso toss tost totc toto totr tots tott tows trcc trfc trfr troc troo tros trot trow trst trtc trtr tscc tsfc tsos tssf tssr tsst tstc tsts ttfc ttff ttss tttt two- twoc twof twoo twos twot twss wccc wccf wcco wccr wccs wcct wccw wcfc wcfo wcfr wcfs wcft wcfw wcoc wcoo wcor wcos wcot wcrc wcro wcrr wcrs wcrt wcrw wcsc wcsf wcso wcsr wcss wcst wcsw wctc wctf wcto wctr wcts wctt wctw wcwc wcwf wfcc wfcf wfco wfcr wfcs wfct wffc wfff wfor wfos wfot wfrc wfrf wfro wfrs wfrw wfsc wfso wfsr wfss wfst wftc wftf wftr wftw wfwc wfwo wocc woco wocr wocs wofc woff wofr woft wooc woof woos woot woow worc worf woro worr wors wort worw wosf woso woss wost wosw wotc wotr wots wott wotw wowc wowf wowo wows wowt woww wrco wrcr wrcs wrct wrcw wrfc wrff wrfs wrft wrfw wroc wroo wros wrot wrow wrrc wrro wrrs wrrw wrsc wrsf wrso wrsr wrss wrsw wrtc wrto wrtr wrts wrtw wrwc wrwr wscc wscf wsco wscr wscs wscw wsfc wsff wsfr wsfs wsfw wsoc wsof wsoo wsor wsos wsrc wsrf wsro wsrs wsrt wsrw wssc wssr wsss wsst wssw wstc wstf wsto wstr wsts wstt wstw wswr wsws wswt wsww wtcc wtcf wtco wtcr wtcs wtct wtcw wtfc wtoc wtof wtor wtot wtow wtrc wtro wtrs wtrt wtrw wtsf wtso wtsr wtss wttc wttf wtto wttr wtts wttt wttw wtwf wtwo wtwr wtws wtwt wtww wwcf wwco wwcr wwcs wwct wwcw wwfc wwfr wwfw wwof wwor wwos wwot wwow wwrc wwrf wwrr wwrw wwsc wwsf wwsr wwss wwst wwtc wwtf wwtr wwtw wwwc wwwr wwws wwww