belo[7], bole[7], ebol[7], oble[7], lesb[7], bose[6], sole[5],
bel[6], ble[6], bol[6], lob[6], ole[4], los[4], ols[4], sol[4],
be[4], bo[4], el[3], eo[2], es[2], se[2], os[2],
