5 letter words:
forum10,
mourn7,
4 letter words:
form9,
from9,
four7,
morn6,
muon6,
norm6,
3 letter words:
fon6,
for6,
fou6,
fro6,
fun6,
fur6,
mon5,
mor5,
mun5,
nom5,
rom5,
rum5,
nor3,
our3,
run3,
urn3,
2 letter words:
of5,
mo4,
mu4,
om4,
um4,
no2,
nu2,
on2,
or2,
un2,