5 letter words:
prank11,
punka11,
knaur9,
4 letter words:
knap10,
park10,
punk10,
karn8,
knar8,
knur8,
kuna8,
nark8,
raku8,
rank8,
prau6,
puna6,
3 letter words:
ark7,
auk7,
nap5,
pan5,
par5,
pun5,
pur5,
rap5,
urp5,
ran3,
run3,
urn3,
2 letter words:
ka6,
pa4,
up4,
an2,
ar2,
na2,
nu2,
un2,