7 letter words:
punnier9,
6 letter words:
pinner8,
pterin8,
punier8,
punner8,
punnet8,
punter8,
purine8,
tenpin8,
turnip8,
unpent8,
unripe8,
intern6,
inturn6,
tinner6,
triune6,
uniter6,
unrent6,
5 letter words:
erupt7,
inept7,
input7,
penni7,
print7,
prune7,
purin7,
repin7,
ripen7,
tripe7,
unpen7,
unpin7,
unrip7,
ennui5,
inert5,
inner5,
inrun5,
inter5,
inure5,
inurn5,
niter5,
nitre5,
renin5,
rutin5,
trine5,
tuner5,
unite5,
untie5,
urine5,
uteri5,
4 letter words:
pein6,
pent6,
peri6,
pert6,
pier6,
pine6,
pint6,
pirn6,
ptui6,
punt6,
pure6,
puri6,
ripe6,
trip6,
etui4,
nine4,
nite4,
rein4,
rent4,
rite4,
ruin4,
rune4,
runt4,
tern4,
tier4,
tine4,
tire4,
true4,
tune4,
turn4,
unit4,
3 letter words:
nip5,
pen5,
per5,
pet5,
pie5,
pin5,
pit5,
piu5,
pun5,
pur5,
put5,
rep5,
rip5,
tip5,
tup5,
urp5,
ern3,
inn3,
ire3,
net3,
nit3,
nun3,
nut3,
rei3,
ret3,
rin3,
rue3,
run3,
rut3,
ten3,
tie3,
tin3,
tui3,
tun3,
urn3,
ute3,
2 letter words:
pe4,
pi4,
up4,
en2,
er2,
et2,
in2,
it2,
ne2,
nu2,
re2,
ti2,
un2,
ut2,