6 letter words:
biform13,
5 letter words:
fibro10,
forum10,
bromo9,
broom9,
rumbo9,
buroo7,
4 letter words:
bumf11,
bufo9,
firm9,
forb9,
form9,
frib9,
from9,
mofo9,
boom8,
borm8,
brim8,
ombu8,
umbo8,
four7,
roof7,
biro6,
boor6,
brio6,
broo6,
miro6,
mooi6,
moor6,
muir6,
rimu6,
room6,
roum6,
3 letter words:
fib8,
fob8,
fub8,
fum8,
bum7,
mib7,
mob7,
fir6,
for6,
fou6,
fro6,
fur6,
oof6,
orf6,
rif6,
ufo6,
bio5,
boi5,
boo5,
bor5,
bro5,
bru5,
bur5,
mir5,
moi5,
moo5,
mor5,
mou5,
obi5,
obo5,
oom5,
orb5,
rib5,
rim5,
rob5,
rom5,
rub5,
rum5,
urb5,
oor3,
our3,
roo3,
2 letter words:
if5,
of5,
bi4,
bo4,
mi4,
mo4,
mu4,
ob4,
om4,
um4,
io2,
oi2,
oo2,
or2,
ou2,
ur2,