refren[10],
rener[5],
fenu[10], nefu[10], ufne[10], refu[10], fere[8], free[8], renu[6], uren[6],
fru[9], fur[9], ruf[9], fee[7], fen[7], nef[7], ref[7], frr[7], nur[5], run[5], urn[5], rur[5], ner[3], ren[3],
fu[8], uf[8], ef[6], fe[6], nu[4], ee[2], en[2], er[2], re[2],
