7 letter words:
burette9,
6 letter words:
better8,
butter8,
teeter6,
terete6,
5 letter words:
beret7,
brute7,
buret7,
butte7,
rebut7,
tuber7,
tutee5,
utter5,
4 letter words:
beer6,
beet6,
bree6,
brut6,
bute6,
butt6,
rube6,
tube6,
rete4,
tree4,
tret4,
true4,
3 letter words:
bee5,
bet5,
bur5,
but5,
reb5,
rub5,
tub5,
urb5,
ere3,
ree3,
ret3,
rue3,
rut3,
tee3,
tet3,
tut3,
ute3,
2 letter words:
be4,
er2,
et2,
re2,
ut2,