4 letter words:
bumf11,
fume9,
numb8,
umbo8,
enuf7,
bone6,
ebon6,
meno6,
menu6,
meou6,
moue6,
muon6,
neum6,
nome6,
omen6,
unbe6,
3 letter words:
fem8,
fob8,
fub8,
bum7,
mob7,
fen6,
feu6,
foe6,
fon6,
fou6,
fun6,
ben5,
bun5,
emu5,
men5,
mon5,
mun5,
neb5,
nob5,
nom5,
nub5,
obe5,
eon3,
one3,
2 letter words:
ef5,
fe5,
of5,
be4,
bo4,
em4,
me4,
mo4,
mu4,
om4,
um4,
en2,
ne2,
no2,
nu2,
oe2,
on2,
un2,