7 letter words:
unfence12,
6 letter words:
fennec11,
5 letter words:
fence10,
4 letter words:
enuf7,
feen7,
unce6,
nene4,
3 letter words:
fee6,
fen6,
feu6,
fun6,
nef6,
cee5,
cue5,
ecu5,
een3,
ene3,
nee3,
nun3,
2 letter words:
ef5,
fe5,
ee2,
en2,
ne2,
nu2,
un2,