cccc cccf ccci cccs ccfc ccff ccfi ccic ccii ccir ccis ccoc ccrc ccrf ccri ccrs ccrt ccsf ccsi ccss ccst cctc cctt cfcf cfco cfcs cffr cfit cfor cfos cfrt cfsi cftc cftr cicc cici cico cicr cics cict ciff cifs ciii ciis ciit cior cios circ ciri ciro cirr cirs cirt cis- cisc cisr ciss cist citf citi cito cits citt coco coct cofc coff cofi cofs coft coif coir cois coit coof coos coot cor- corc corf cori coro corr cors cort cosc cosi coso coss cost cotc coti coto cots cott crcc crcr crfc crfs cric crif cris crit croc croo cror crot crrt crss crst crtc crtf crts cscc cscf csci csco cscr cscs csfc csfr csio csir csis csit csor csos csot csrc csrs cssr cstc csto cstr csts ctcf ctfc ctfo ctfs ctic ctor ctos ctot ctrc ctrs ctsc ctss ctts fccf fcic fcii fcot fcsc fcst fcto ffcc ffff ffii ffrr ffss fftf ficc fico fics fict fifc fiff fifi fifo fift fiii fior fios firs fisc fisi fiss fist fitc fiti fits fitt foci foco focs fofo fois foof foos foot for- fori foro forr fors fort fosi foso foss fost foti foto fots fott frcc frfc fric frio fris frit fros frot frsc frso frst fscc fsfi fsfo fssc fssf ft-c ftfc ftii ftos ftrs ftsr iccc iccf icci icco iccr iccs icct icis icoc icor icos icrc icrf icrr icrs icrt icsc icsi icsr icss icst icts ifco ific ifis ifit ifor ifrf ifri ifsc ifso ifto iiii iiio iiis iiit iioi iioo iios iirc iirs iisc iisi iisr iist iitr iitt ioci iofc ioii ioio ioit ioof iooi iooo ioos iori iors ioso iotf ioto ircc ircs iri- iric irio iris iroc irrc irri irrs irsf irtf irti irts iscc isci isco iscr iscs isct isfc isic isis isit iso- isoc isof isor isos isri issc issf issi isso issr isss istc isti isto istr ists itcs itic itif itis itof itoi itoo itor itos itrf itri itrs itsf itsi itso ittf itto occc occi occt ocis ocos ocro ocrr ocrs oct- octi octo octs ofcr off- offc offo offr offs ofit ofor ofst oici oiii oios oirt oisc oist oitc oiti oocr ooff oofs oooo ooos oort oosi oost oots orci orco orcs orff orfi orfs ori- oric orif orio oris orit oro- orof oror oros orot orri orro orrs orsi orso ortc orto orts oscc osci osco osii osis osoi osoo osor osos osro ossi osso ostc osti ostr osts otfc otic otif otis otit oto- otof otoo otor otos otro otrs otso otti otto otts rccc rccs rcfc rcic rcis rcos rcsc rcsi rcss rctc rcti rcts rffc rfic rftc ricc rico rics rict riff rifs rift riif riis rios riot riri rirs risc risi riso riss rist riti rito rits ritt rocc roco rocs rofc roff rofo roif roio roir rois roit roof rooi roor roos root rorc rori roro rort rosc rosi roso ross rost rotc roti roto rotr rots rott rrfc rrif rrrr rscc rscs rsfc rsis rsos rsts rtcc rtfc rtss rtts s-ic s-ii s-os sccc sccs scct scfc scfi sci- scic scif scio scir scis scit scoo scor scot scr- scrc scri scrs scsc scsi scso scsr scst sctc scto sctr scts sfcc sfco sfcs sffc sfio sfor sfos sfrc sfro sfss sfts sicc sici sico sics siff sifo sifr sift siit sior sios siot sirc sirf siri siro sirr sirs sirt sisc sisi siss sist sit- sitc siti sito sits sitt soci soco socr socs sofi sofo soft soic soif soir sois soit soof soor soos soot sori soro sorr sors sort sosi soso soss sost sotc soto sots srcc srct srfc srfi sris sros srtr sscc ssci sscs ssfc ssis ssit ssoc ssot ssrc ssri ssrs sssc sssf sssi ssss sstc ssts stcc stcs stfc stic stif stio stir stis stit stof stoo stor stos stot strc stri stro strs stsf stsi stss sttc sttr tccc tcfc tcos tctc tcts tfot tfrs tfsi tfss tftc ticc tico tics tiff tifo tift tiit tios tiri tiro tirr tirs tisi tiso tiss tist titc titi tito tits titt toci toco toff tofi tofo toft tois toit toof toor toos toot torc torf tori toro torr tors tort tosc tosi toso toss tost totc toti toto totr tots tott trcc trfc trfr tri- tric trif trio tris trit troc troi troo tros trot trsi trst trtc trtr tscc tsfc tsis tsoi tsos tssf tssi tssr tsst tstc tsts ttfc ttff ttss tttt