sfen[8], sfer[8], scen[5], serc[5], kres[5], kser[5], reks[5],
fen[7], nef[7], ref[7], fes[7], cek[5], cen[4], cne[4], cer[4], ker[4], rek[4], ces[4], eks[4], ner[3], ren[3], sen[3], ser[3],
ef[6], fe[6], ce[3], en[2], er[2], re[2], es[2], se[2],
