5 letter words:
piker11,
puker11,
4 letter words:
kepi10,
kipe10,
perk10,
pike10,
puke10,
keir8,
kier8,
kuri8,
reik8,
peri6,
pier6,
puer6,
puir6,
pure6,
puri6,
ripe6,
iure4,
3 letter words:
kep9,
kip9,
eik7,
erk7,
euk7,
irk7,
kir7,
kue7,
uke7,
per5,
pie5,
pir5,
piu5,
pre5,
pur5,
rep5,
rip5,
urp5,
ire3,
rei3,
rue3,
ure3,
2 letter words:
ki6,
pe4,
pi4,
up4,
er2,
re2,
ur2,