cccc ccci cccv ccic ccii cciv ccoc cctc cctt cctv ccvi ccvo cicc cici cico cict ciii ciit citi cito citt citv city civc civo civy coco coct coit coot cotc coti coto cott coty covo covy coyo coyt ctic ctot ctvo ctvt cvcc cvii cyc- cycc cyt- cyto cyy- cyyc iccc icci icco icct icoc ictv iiii iiio iiit iioi iioo iitt ioci ioii ioio ioit iooi iooo ioto itic itoi itoo itto itty ivic occc occi occt oct- octi octo octy oici oiii oitc oiti oooo ooty otic otit oto- otoo otov otoy otti otto ovi- ovo- ovoo ovot tccc tcov tctc ticc tico tiit titc titi tito titt tivi tivo tivy tiyi tiyo to-y toci toco toit toot totc toti toto tott toty tovo toyo toyt ttoy tttt tvtv tvyo tyco tyti tyto tytt tyty vcci vic- vici vico vict viii viti vito vitt vivi vivo vivy voic voio voit vooc voot voto voyi vt-i vvvv vyit yccc yctc yiti yivo yoit yoot yott yoyo yvto yyyy