cccc ccci ccic ccii ccix ccoc cctc cctt ccxi cicc cici cico cict ciii ciit citi cito citt city cixi coco coct coit coix coot cotc coti coto cott coty coxy coyo coyt ctic ctot cxii cxix cxxi cxxx cyc- cycc cyt- cyto cyy- cyyc iccc icci icco icct icoc iiii iiio iiit iioi iioo iitt ioci ioii ioio ioit iooi iooo ioto itic itoi itoo itto itty ixxi occc occi occt oct- octi octo octy oici oiii oitc oiti oooo ooty otic otit oto- otoo otoy otti otto oxi- oxic oxo- oxox oxxo oxy- tccc tctc ticc tico tiit titc titi tito titt tixt tiyi tiyo to-y toci toco toit toot totc toti toto tott toty tox- toxi toxo toxt toyo toyt ttoy tttt txii tyco tyti tyto tytt tyty tyxt xcii xico xiii xito xixi xoco xoxo xoyo xxii xxix xxxi xxxo xxxx xxxy yccc yctc yiti yoit yoix yoot yott yoyo yyyy