bach[9], bace[7], echa[7], heca[7], anch[7], chan[7], chna[7], chen[7], bean[6], cena[5],
cab[6], ach[6], cha[6], che[6], ech[6], hec[6], ban[5], ben[5], han[5], hen[5], cna[4], cen[4], cne[4],
ba[4], be[4], ha[4], eh[4], he[4], ce[3], na[2], en[2],
