fere[8], free[8], sfer[8], erek[5], esek[5], kres[5], kser[5], reks[5], eser[4],
fee[7], ref[7], fes[7], ker[4], rek[4], eks[4], ser[3],
ef[6], fe[6], eł[4], ee[2], er[2], re[2], es[2], se[2],
