acha[7], echa[7], heca[7], anch[7], chan[7], chna[7], chen[7], acan[5], cena[5],
ach[6], cha[6], che[6], ech[6], hec[6], aha[5], han[5], hen[5], cna[4], cen[4], cne[4], aaa[3], ana[3],
ha[4], eh[4], he[4], ce[3], aa[2], na[2], en[2],
