5 letter words:
fanum10,
4 letter words:
foam9,
fano7,
faun7,
mano6,
maun6,
moan6,
mona6,
muon6,
namu6,
noma6,
ouma6,
3 letter words:
fum8,
auf6,
fan6,
fon6,
fou6,
fun6,
oaf6,
ufo6,
amu5,
man5,
mna5,
moa5,
mon5,
mou5,
mun5,
nam5,
nom5,
2 letter words:
fa5,
of5,
am4,
ma4,
mo4,
mu4,
om4,
um4,
an2,
na2,
no2,
nu2,
on2,
ou2,
un2,