bece[7], eche[7], hece[7], obce[7], echo[7], heco[7], beko[7], koce[6],
che[6], ech[6], hec[6], bek[6], cob[6], hoc[6], och[6], bok[6], bee[5], ehe[5], cek[5], koc[5], eko[4],
be[4], eh[4], he[4], bo[4], ho[4], oh[4], ce[3], co[3], ko[3], ok[3], ee[2], eo[2],
