7 letter words:
enfelon10,
nonfuel10,
6 letter words:
fennel9,
funnel9,
unfool9,
5 letter words:
felon8,
foule8,
leone5,
noule5,
4 letter words:
enuf7,
feel7,
feen7,
flee7,
floe7,
flue7,
foen7,
fone7,
fool7,
foul7,
fuel7,
loof7,
enol4,
leno4,
lone4,
loon4,
loun4,
lune4,
nene4,
neon4,
noel4,
nole4,
nolo4,
none4,
noon4,
noul4,
noun4,
oleo4,
3 letter words:
elf6,
fee6,
fen6,
feu6,
flu6,
foe6,
fon6,
fou6,
fun6,
nef6,
oof6,
ufo6,
eel3,
een3,
ene3,
eon3,
lee3,
leu3,
loo3,
lou3,
nee3,
non3,
noo3,
nun3,
ole3,
one3,
ono3,
oon3,
ule3,
2 letter words:
ef5,
fe5,
of5,
ee2,
el2,
en2,
lo2,
ne2,
no2,
nu2,
oe2,
on2,
oo2,
ou2,
un2,