9 letter words:
buttercup15,
6 letter words:
precut10,
butter8,
cutter8,
putter8,
5 letter words:
crept9,
cuber9,
cutup9,
brute7,
buret7,
butte7,
butut7,
cruet7,
curet7,
cuter7,
eruct7,
erupt7,
rebut7,
recut7,
truce7,
tuber7,
utter5,
4 letter words:
burp8,
cube8,
curb8,
puce8,
brut6,
bute6,
butt6,
cure6,
curt6,
cute6,
ecru6,
pert6,
pure6,
putt6,
rube6,
tube6,
tret4,
true4,
tutu4,
3 letter words:
cep7,
cub7,
cup7,
pec7,
pub7,
bet5,
bur5,
but5,
cru5,
cue5,
cur5,
cut5,
ecu5,
per5,
pet5,
pur5,
put5,
reb5,
rec5,
rep5,
rub5,
tub5,
tup5,
urb5,
urp5,
ret3,
rue3,
rut3,
tet3,
tut3,
ute3,
2 letter words:
be4,
pe4,
up4,
er2,
et2,
re2,
ut2,