cccc ccci ccic ccii ccoc cctc cctt chch chci chic chih chit choc choh choi choo chto chtt cicc cich cici cico cict ciht ciii ciit cith citi cito citt coch coco coct coho coit cooh coot cotc coth coti coto cott ctic ctot h-ii hccc hcch hchi hhhh hi-c hicc hich hico hihc hihi hiho hiht hiit hioc hitc hiti hito hitt hoch hoho hoit hoot hoth hoti hoto hott htcc htoh iccc icci icco icct ichc ichi icho icoc ihcc ihit ihtc iiht iiii iiio iiit iioi iioo iitt ioci ioii ioio ioit iooi iooo ioto itch ithc itic itoh itoi itoo itto occc occi occt ochi ocht oct- octi octo ohcc ohhi ohho ohio ohoh ohto oici oiii oitc oiti ooho oooh oooo otho otic otit oto- otoh otoo otti otto tccc tch- tchh tchi tcho tctc thch thi- thic thio thoo thot ticc tich tico tiht tiit titc tith titi tito titt toch toci toco tohi toho toit tooh toot totc toth toti toto tott tttt