bele[7], belo[7], bole[7], ebol[7], oble[7], beto[7],
bel[6], ble[6], bol[6], lob[6], bet[6], bot[6], bee[5], tle[5], lot[5], lee[4], ole[4], eto[4],
be[4], bo[4], el[3], et[3], te[3], ot[3], to[3], ee[2], eo[2],
