bel[6], ble[6], bet[6], ben[5], tle[5], web[5], len[4], net[4], ten[4], set[4], tss[4], lew[4], twe[4], wet[4], wte[4], sen[3], wen[3], swe[3],
be[4], el[3], et[3], te[3], ts[3], en[2], es[2], se[2], ew[2], we[2],