cccc ccci ccgc ccgt ccic ccii ccoc cctc cctt cgcc cgcg cicc cici cico cict cigi ciii ciit citg citi cito citt city coco coct cogi cogo coit coot cotc coti coto cott coty coyo coyt cozi cozy cozz ctic ctot cyc- cycc cyt- cyto cyy- cyyc czyz gc-c gccc gcic gcii gctc gggg gigg gigi gigo giog gioi gito gizi gizo gizy gizz gogi gogo goit goog gooi goot goti goto gott goty goyt gozi gozo gtco gytt i-go iccc icci icco icct icgc icoc igcc iggy igoo igot iiii iiio iiit iioi iioo iitt iocg ioci iogt ioii ioio ioit iooi iooo ioto itgc itgo itic itoi itoo itto itty izzo izzy occc occi occt oct- octi octo octy oggi oggy ogiz ogog ogoi oici oigo oiii oitc oiti oitz oooo ooty oozi oozy otic otit oto- otog otoo otoy otti otto otyg otzi ozzy tccc tctc tgcc tgtc ticc tico tigi tigy tiit titc titi tito titt titz tiyi tiyo tizi tizz to-y toci toco togo togt toit toot totc toti toto tott toty toyo toyt toyz tozo tozy ttoy tttt tyco tyti tyto tytt tyty tzzt yccc yctc ygot yiti yogi yogo yoit yoot yooz yott yoyo yozo yyyy zico zigg zigi zigo ziti zito ziyi zizi zizz zoco zogg zogi zogo zoic zoio zoo- zoot zoti zott zoty zotz zozo zyg- zygi zygo zyyi zzzz