cccc cccf ccci ccfc ccff ccfi ccic ccii ccoc cctc cctt cfcf cfco cfcy cfit cftc cicc cici cico cict ciff ciii ciit citf citi cito citt city coco coct cofc coff cofi coft coif coit coof coot cotc coti coto cott coty coyf coyo coyt ctcf ctfc ctfo ctic ctot cyc- cycc cyfi cyft cyt- cyto cyy- cyyc fccf fcic fcii fcot fcto fcty ffcc ffff ffii fftf ficc fico fict fifc fiff fifi fifo fift fiii fitc fiti fitt foci foco fofo foof foot foti foto fott foty foyt ft-c ftfc ftfy ftii fyfi fyti iccc iccf icci icco icct icoc ifco iffy ific ifit ifto ifyo iiii iiio iiit iioi iioo iitt ioci iofc ioii ioio ioit ioof iooi iooo iotf ioto itic itif itof itoi itoo ittf itto itty occc occi occt oct- octi octo octy off- offc offo offy ofit oici oiii oitc oiti ooff oofy oooo ooty otfc otic otif otit oto- otof otoo otoy otti otto tccc tcfc tctc tfot tftc ticc tico tiff tifo tift tiit titc titi tito titt tiyi tiyo to-y toci toco toff tofi tofo toft toit toof toot totc toti toto tott toty toyo toyt ttfc ttff ttoy tttt tyco tyff tyft tyti tyto tytt tyty yccc yctc yiff yift yiti yoff yoit yoof yoot yott yoyo yyff yyyy