4 letter words:
firm9,
form9,
from9,
mofo9,
momi8,
roof7,
miro6,
mooi6,
moor6,
room6,
3 letter words:
mim7,
mom7,
fir6,
for6,
fro6,
oof6,
orf6,
rif6,
mir5,
moi5,
moo5,
mor5,
oom5,
rim5,
rom5,
oor3,
roo3,
2 letter words:
mm6,
if5,
of5,
mi4,
mo4,
om4,
io2,
oi2,
oo2,
or2,