echa[7], heca[7], echo[7], heco[7], kace[6], coka[6], koca[6], koce[6],
ach[6], cha[6], che[6], ech[6], hec[6], hak[6], hoc[6], och[6], kac[5], cek[5], hao[5], koc[5], oka[4], eko[4],
ha[4], eh[4], he[4], ho[4], oh[4], ce[3], ka[3], co[3], ko[3], ok[3], eo[2],
