7 letter words:
perturb11,
5 letter words:
brute7,
buret7,
erupt7,
purer7,
rebut7,
tuber7,
truer5,
4 letter words:
burp8,
brut6,
burr6,
bute6,
pert6,
pure6,
purr6,
rube6,
tube6,
ruer4,
true4,
3 letter words:
pub7,
bet5,
brr5,
bur5,
but5,
per5,
pet5,
pur5,
put5,
reb5,
rep5,
rub5,
tub5,
tup5,
urb5,
urp5,
err3,
ret3,
rue3,
rut3,
ute3,
2 letter words:
be4,
pe4,
up4,
er2,
et2,
re2,
ut2,
