7 letter words:
zippier20,
6 letter words:
zipper19,
pipier10,
5 letter words:
prize16,
piper9,
4 letter words:
prez15,
peep8,
perp8,
pipe8,
prep8,
repp8,
peer6,
pere6,
peri6,
pier6,
pree6,
ripe6,
3 letter words:
zep14,
zip14,
zee12,
pep7,
pip7,
pee5,
per5,
pie5,
rep5,
rip5,
ere3,
ire3,
ree3,
rei3,
2 letter words:
pe4,
pi4,
er2,
re2,