6 letter words:
buttes8,
5 letter words:
fetus8,
tufts8,
butes7,
butte7,
butts7,
tubes7,
4 letter words:
fubs9,
efts7,
fest7,
fets7,
feus7,
fuse7,
tuft7,
best6,
bets6,
bust6,
bute6,
buts6,
butt6,
stub6,
tube6,
tubs6,
sett4,
stet4,
suet4,
test4,
tets4,
tuts4,
utes4,
3 letter words:
fub8,
efs6,
eft6,
fes6,
fet6,
feu6,
bes5,
bet5,
bus5,
but5,
sub5,
tub5,
set3,
sue3,
tet3,
tut3,
use3,
ute3,
uts3,
2 letter words:
ef5,
fe5,
be4,
es2,
et2,
us2,
ut2,