dych[9], dach[8], dech[8], achy[8], hyca[8], hecy[8], echa[7], heca[7],
hyc[7], ach[6], cha[6], che[6], ech[6], hec[6],
ha[4], eh[4], he[4], ad[3], da[3], ce[3], de[3],
