refren[10], renery[7],
rener[5],
feny[9], nefy[9], refy[9], fere[8], free[8], nery[5], reny[5],
efy[8], fee[7], fen[7], nef[7], ref[7], frr[7], ery[4], ner[3], ren[3],
ef[6], fe[6], ny[3], ee[2], en[2], er[2], re[2],
