dach[8], dech[8], acha[7], echa[7], heca[7], eche[7], hece[7], dece[6],
ach[6], cha[6], che[6], ech[6], hec[6], aha[5], ehe[5],
ha[4], eh[4], he[4], ad[3], da[3], ce[3], de[3], aa[2], ee[2],
