5 letter words:
forum10,
bromo9,
broom9,
4 letter words:
bumf11,
forb9,
form9,
from9,
boom8,
umbo8,
four7,
roof7,
boor6,
broo6,
moor6,
room6,
3 letter words:
fob8,
fub8,
bum7,
mob7,
for6,
fou6,
fro6,
fur6,
boo5,
bro5,
bur5,
moo5,
mor5,
orb5,
rob5,
rom5,
rub5,
rum5,
urb5,
our3,
2 letter words:
of5,
bo4,
mo4,
mu4,
om4,
um4,
or2,