8 letter words:
tubiform15,
6 letter words:
biform13,
5 letter words:
forum10,
motif10,
mufti10,
fruit8,
bruit7,
orbit7,
tumor7,
turbo7,
4 letter words:
bumf11,
firm9,
forb9,
form9,
from9,
brim8,
tomb8,
umbo8,
fort7,
four7,
frit7,
rift7,
tofu7,
turf7,
biro6,
bort6,
bout6,
brio6,
brit6,
brut6,
mort6,
obit6,
omit6,
trim6,
riot4,
roti4,
rout4,
tiro4,
tori4,
tour4,
trio4,
3 letter words:
fib8,
fob8,
fub8,
bum7,
mib7,
mob7,
fir6,
fit6,
for6,
fou6,
fro6,
fur6,
oft6,
rif6,
bio5,
bit5,
bot5,
bro5,
bur5,
but5,
mir5,
mor5,
mot5,
mut5,
obi5,
orb5,
rib5,
rim5,
rob5,
rom5,
rub5,
rum5,
tom5,
tub5,
urb5,
ort3,
our3,
out3,
rot3,
rut3,
tor3,
tui3,
2 letter words:
if5,
of5,
bi4,
bo4,
mi4,
mo4,
mu4,
om4,
um4,
it2,
oi2,
or2,
ti2,
to2,
ut2,