6 letter words:
zipper19,
kipper14,
5 letter words:
prize16,
piker11,
piper9,
upper9,
4 letter words:
zerk17,
prez15,
kepi10,
perk10,
pike10,
puke10,
keir8,
kier8,
perp8,
pipe8,
prep8,
repp8,
peri6,
pier6,
pure6,
puri6,
ripe6,
3 letter words:
zek16,
zep14,
zip14,
kep9,
kip9,
irk7,
kir7,
kue7,
pep7,
pip7,
pup7,
uke7,
per5,
pie5,
piu5,
pur5,
rep5,
rip5,
urp5,
ire3,
rei3,
rue3,
2 letter words:
ki6,
pe4,
pi4,
up4,
er2,
re2,