7 letter words:
purpure11,
6 letter words:
pruner8,
unpure8,
5 letter words:
upper9,
prune7,
purer7,
rerun5,
4 letter words:
perp8,
prep8,
pupu8,
repp8,
pure6,
purr6,
ruer4,
rune4,
3 letter words:
pep7,
pup7,
pen5,
per5,
pun5,
pur5,
rep5,
urp5,
ern3,
err3,
rue3,
run3,
urn3,
2 letter words:
pe4,
up4,
en2,
er2,
ne2,
nu2,
re2,
un2,