cccc cccf ccfc ccff ccoc ccrc ccrf ccrt cctc cctt cfcf cfco cfcy cffr cfor cfrt cfry cftc cftr coco coct cofc coff coft coof coot cor- corc corf coro corr cort cory cotc coto cott coty coyf coyo coyr coyt crcc crcr crfc croc croo cror crot croy crrt crtc crtf cry- cryo ctcf ctfc ctfo ctor ctot ctrc cyc- cycc cyft cyrt cyt- cyto cyy- cyyc fccf fcot fcto fcty ffcc ffff ffrr fftf foco fofo foof foot for- foro forr fort foto fott foty foyt frcc frfc frot ft-c ftfc ftfy fyry occc occt ocro ocrr oct- octo octy ofcr off- offc offo offr offy ofor oocr ooff oofy oooo oort oory ooty orco orff oro- orof oror orot oroy orro orry ortc orto otfc oto- otof otoo otor otoy otro otry otto otyr rccc rcfc rctc rcyc rffc rftc rocc roco rofc roff rofo roof roor root rorc roro rort rory rotc roto rotr rott roty royt rrfc rrrr rtcc rtfc ryff ryft ryot rytt ryyf ryyt tccc tcfc tctc tfot tftc to-y toco toff tofo toft toof toor toot torc torf toro torr tort tory totc toto totr tott toty toyo toyt trcc trfc trfr troc troo trot troy trtc trtr try- tryo ttfc ttff ttoy tttt tyco tyff tyft tyr- tyrf tyro tyrr tyto tytt tyty yccc yctc yoff yoof yoot yoro yort yory yott yoyo yrof yyff yyyy