7 letter words:
pumpers13,
repumps13,
6 letter words:
pumper12,
repump12,
supper10,
uppers10,
5 letter words:
pumps11,
perms9,
perps9,
preps9,
repps9,
rumps9,
sperm9,
spume9,
upper9,
mures7,
muser7,
purse7,
serum7,
sprue7,
super7,
4 letter words:
pump10,
peps8,
perm8,
perp8,
prep8,
pups8,
repp8,
rump8,
sump8,
umps8,
emus6,
mure6,
muse6,
pure6,
purs6,
rems6,
reps6,
rums6,
spue6,
spur6,
supe6,
urps6,
rues4,
ruse4,
suer4,
sure4,
user4,
3 letter words:
pep7,
pup7,
ump7,
ems5,
emu5,
mus5,
per5,
pes5,
pur5,
pus5,
rem5,
rep5,
rum5,
sum5,
sup5,
ups5,
urp5,
ers3,
res3,
rue3,
ser3,
sue3,
use3,
2 letter words:
em4,
me4,
mu4,
pe4,
um4,
up4,
er2,
es2,
re2,
us2,