refu[10], fere[8], free[8], ceru[7], erce[5],
fru[9], fur[9], ruf[9], cłu[8], fee[7], ref[7], ecu[6], cru[6], ceł[6], cer[4],
fu[8], uf[8], ef[6], fe[6], eł[4], ce[3], ee[2], er[2], re[2],
