5 letter words:
forum10,
4 letter words:
firm9,
form9,
from9,
four7,
miro6,
muir6,
rimu6,
roum6,
3 letter words:
fum8,
fir6,
for6,
fou6,
fro6,
fur6,
orf6,
rif6,
ufo6,
mir5,
moi5,
mor5,
mou5,
rim5,
rom5,
rum5,
our3,
2 letter words:
if5,
of5,
mi4,
mo4,
mu4,
om4,
um4,
io2,
oi2,
or2,
ou2,
ur2,