6 letter words:
bouton8,
button8,
5 letter words:
fount8,
futon8,
4 letter words:
font7,
foot7,
toft7,
tofu7,
tuft7,
boon6,
boot6,
bott6,
bout6,
bunt6,
butt6,
onto4,
otto4,
toon4,
toot4,
tout4,
unto4,
3 letter words:
fob8,
fub8,
fon6,
fou6,
fun6,
oft6,
boo5,
bot5,
bun5,
but5,
nob5,
nub5,
tub5,
noo3,
not3,
nut3,
ono3,
oot3,
out3,
ton3,
too3,
tot3,
tun3,
tut3,
2 letter words:
of5,
bo4,
no2,
nu2,
on2,
to2,
un2,
ut2,