cccc cccf ccci cccs ccfc ccff ccfi ccic ccii ccis ccoc ccsf ccsi ccss ccst cctc cctt cfcf cfco cfcs cfcy cfit cfos cfsi cftc cicc cici cico cics cict ciff cifs ciii ciis ciit cios cis- cisc ciss cist cisy citf citi cito cits citt city coco coct cofc coff cofi cofs coft coif cois coit coof coos coot cosc cosi coso coss cost cosy cotc coti coto cots cott coty coyf coyo coys coyt cscc cscf csci csco cscs csfc csio csis csit csos csot cstc csto csts csys ctcf ctfc ctfo ctfs ctic ctos ctot ctsc ctss ctts cyc- cycc cycs cyfi cyfs cyft cyst cyt- cyto cyy- cyyc fccf fcic fcii fcot fcsc fcst fcto fcty ffcc ffff ffii ffss fftf ficc fico fics fict fifc fiff fifi fifo fift fiii fios fisc fisi fiss fist fitc fiti fits fitt foci foco focs fofo fois foof foos foot fosi foso foss fost foti foto fots fott foty foys foyt fscc fsfi fsfo fssc fssf ft-c ftfc ftfy ftii ftos fyfi fyti iccc iccf icci icco iccs icct icis icoc icos icsc icsi icss icst icts ifco iffy ific ifis ifit ifsc ifso ifto ifyo iiii iiio iiis iiit iioi iioo iios iisc iisi iist iitt ioci iofc ioii ioio ioit ioof iooi iooo ioos ioso iotf ioto iscc isci isco iscs isct isfc isic isis isit iso- isoc isof isos issc issf issi isso isss issy istc isti isto ists isty isys itcs itic itif itis itof itoi itoo itos itsf itsi itso itsy ittf itto itty iyos occc occi occt ocis ocos oct- octi octo octs octy ocys off- offc offo offs offy ofit ofst oici oiii oios oisc oist oitc oiti ooff oofs oofy oooo ooos oosi oost oots ooty oscc osci osco osii osis osoi osoo osos ossi osso ossy ostc osti osts osyt otfc otic otif otis otit oto- otof otoo otos otoy otso otti otto otts oyss oyst s-ic s-ii s-os sccc sccs scct sccy scfc scfi sci- scic scif scio scis scit scoo scot scsc scsi scso scst sctc scto scts sfcc sfco sfcs sffc sfio sfos sfss sfts sicc sici sico sics siff sifo sift sify siit sios siot sisc sisi siss sist sisy sit- sitc siti sito sits sitt sity siyi soci soco socs socy sofi sofo soft soic soif sois soit soof soos soot sooy sosi soso soss sost sotc soto sots soyo soys soyt sscc ssci sscs ssfc ssis ssit ssoc ssot sssc sssf sssi ssss sstc ssts stcc stcs stfc stic stif stio stis stit stof stoo stos stot stoy stsf stsi stss sttc styf stys syco syff syfy syis syso syss syst sytt tccc tcfc tcos tctc tcts tfot tfsi tfss tftc ticc tico tics tiff tifo tift tiit tios tisi tiso tiss tist titc titi tito tits titt tiyi tiyo to-y toci toco toff tofi tofo toft tois toit toof toos toot tosc tosi toso toss tost tosy totc toti toto tots tott toty toyo toys toyt tscc tsfc tsis tsoi tsos tsoy tssf tssi tsst tstc tsts tsys ttfc ttff ttoy ttss tttt ttys tyco tyff tyft tyss tyst tyti tyto tytt tyty yccc yctc yiff yift yiss yist yiti yoff yoit yoof yoot yosi yoso yost yott yoyo ysco ysii yyff yyyy