7 letter words:
preener9,
6 letter words:
pruner8,
repure8,
5 letter words:
neper7,
preen7,
prune7,
puree7,
purer7,
rupee7,
enure5,
rerun5,
4 letter words:
epee6,
neep6,
peen6,
peer6,
pene6,
pere6,
pern6,
pree6,
puer6,
pure6,
purr6,
rurp6,
erne4,
nurr4,
reen4,
ruer4,
rune4,
3 letter words:
nep5,
pee5,
pen5,
per5,
pre5,
pun5,
pur5,
rep5,
urp5,
een3,
ene3,
ere3,
ern3,
err3,
nee3,
nur3,
ree3,
ren3,
rue3,
run3,
ure3,
urn3,
2 letter words:
pe4,
up4,
ee2,
en2,
er2,
ne2,
nu2,
re2,
un2,
ur2,