6 letter words:
erupts8,
purest8,
uprest8,
5 letter words:
erupt7,
perst7,
perts7,
prest7,
puers7,
pures7,
purse7,
setup7,
sprue7,
spuer7,
spurt7,
strep7,
stupe7,
super7,
turps7,
upset7,
upter7,
sture5,
trues5,
4 letter words:
pert6,
pest6,
pets6,
puer6,
pure6,
purs6,
puts6,
reps6,
sept6,
spet6,
spue6,
spur6,
step6,
supe6,
tups6,
urps6,
erst4,
rest4,
rets4,
rues4,
ruse4,
rust4,
ruts4,
suer4,
suet4,
sure4,
tres4,
true4,
ures4,
user4,
utes4,
3 letter words:
per5,
pes5,
pet5,
pre5,
pst5,
pur5,
pus5,
put5,
rep5,
sup5,
tup5,
ups5,
urp5,
ers3,
est3,
res3,
ret3,
rue3,
rut3,
ser3,
set3,
sue3,
sur3,
tes3,
ure3,
use3,
ute3,
uts3,
2 letter words:
pe4,
up4,
er2,
es2,
et2,
re2,
st2,
te2,
ur2,
us2,
ut2,