8 letter words:
perturbs12,
7 letter words:
perturb11,
burster9,
spurter9,
6 letter words:
superb10,
brutes8,
burets8,
buster8,
erupts8,
purest8,
purser8,
rebuts8,
tubers8,
5 letter words:
burps9,
pubes9,
brute7,
bruts7,
buret7,
burrs7,
burse7,
burst7,
butes7,
erupt7,
prest7,
purer7,
purrs7,
purse7,
rebus7,
rebut7,
rubes7,
setup7,
sprue7,
spurt7,
strep7,
stupe7,
suber7,
super7,
tuber7,
tubes7,
turps7,
upset7,
ruers5,
surer5,
truer5,
trues5,
4 letter words:
burp8,
pubs8,
best6,
bets6,
brut6,
burr6,
burs6,
bust6,
bute6,
buts6,
pert6,
pest6,
pets6,
pure6,
purr6,
purs6,
puts6,
rebs6,
reps6,
rube6,
rubs6,
sept6,
spue6,
spur6,
step6,
stub6,
supe6,
tube6,
tubs6,
tups6,
urbs6,
urps6,
errs4,
erst4,
rest4,
rets4,
ruer4,
rues4,
ruse4,
rust4,
ruts4,
suer4,
suet4,
sure4,
tres4,
true4,
user4,
utes4,
3 letter words:
pub7,
bes5,
bet5,
brr5,
bur5,
bus5,
but5,
per5,
pes5,
pet5,
pst5,
pur5,
pus5,
put5,
reb5,
rep5,
rub5,
sub5,
sup5,
tub5,
tup5,
ups5,
urb5,
urp5,
err3,
ers3,
res3,
ret3,
rue3,
rut3,
ser3,
set3,
sue3,
use3,
ute3,
uts3,
2 letter words:
be4,
pe4,
up4,
er2,
es2,
et2,
re2,
us2,
ut2,