bek[6], bel[6], ble[6], cek[5], cel[5], cle[5], lec[5], kel[5], kle[5], lek[5], kem[5], mel[5], ben[5], cen[4], cne[4], len[4], men[4], nem[4],
be[4], ce[3], el[3], em[3], me[3], en[2],
