efedr[10],
fere[8], free[8], eden[5], dren[5], nerd[5],
fee[7], fen[7], nef[7], ref[7], den[4], end[4], der[4], red[4], ner[3], ren[3],
ef[6], fe[6], de[3], ee[2], en[2], er[2], re[2],
