tchy[9], tych[9], chat[8], achy[8], hyca[8], acha[7], tacy[7], taca[6],
hyc[7], ach[6], cha[6], cyt[6], aha[5], tac[5], aty[5], ata[4],
ha[4], ty[4], at[3], ta[3], aa[2],
