5 letter words:
unzip16,
prink11,
purin7,
unrip7,
4 letter words:
pink10,
punk10,
kirn8,
knur8,
rink8,
pirn6,
puri6,
purr6,
ruin4,
3 letter words:
zip14,
zin12,
kip9,
ink7,
irk7,
kin7,
kir7,
nip5,
pin5,
piu5,
pun5,
pur5,
rip5,
urp5,
rin3,
run3,
urn3,
2 letter words:
ki6,
pi4,
up4,
in2,
nu2,
un2,