sfen[8], sfer[8], kres[5], kser[5], reks[5], seks[5], sens[4], sers[4],
fen[7], nef[7], ref[7], fes[7], ker[4], rek[4], eks[4], ner[3], ren[3], sen[3], ser[3],
ef[6], fe[6], en[2], er[2], re[2], es[2], se[2],
