7 letter words:
punnier9,
6 letter words:
pinner8,
pruine8,
punier8,
punner8,
purine8,
unripe8,
unrein6,
5 letter words:
penni7,
prune7,
purin7,
repin7,
ripen7,
unpen7,
unpin7,
unrip7,
ennui5,
inner5,
inrun5,
inure5,
inurn5,
renin5,
urine5,
4 letter words:
pein6,
peni6,
peri6,
pern6,
pier6,
pine6,
pirn6,
puer6,
puir6,
pure6,
puri6,
ripe6,
iure4,
nine4,
rein4,
rine4,
ruin4,
rune4,
3 letter words:
nep5,
nip5,
pen5,
per5,
pie5,
pin5,
pir5,
piu5,
pre5,
pun5,
pur5,
rep5,
rip5,
urp5,
ern3,
inn3,
ire3,
nie3,
nun3,
nur3,
rei3,
ren3,
rin3,
rue3,
run3,
uni3,
ure3,
urn3,
2 letter words:
pe4,
pi4,
up4,
en2,
er2,
in2,
ne2,
nu2,
re2,
un2,
ur2,