7 letter words:
purtier9,
6 letter words:
irrupt8,
puirer8,
5 letter words:
erupt7,
piert7,
prier7,
purer7,
riper7,
tripe7,
upter7,
uptie7,
trier5,
truer5,
urite5,
uteri5,
4 letter words:
peri6,
pert6,
pier6,
piet6,
ptui6,
puer6,
puir6,
pure6,
puri6,
purr6,
ripe6,
ript6,
rurp6,
trip6,
etui4,
iure4,
rite4,
ruer4,
tier4,
tire4,
tirr4,
trie4,
true4,
3 letter words:
per5,
pet5,
pie5,
pir5,
pit5,
piu5,
pre5,
pur5,
put5,
rep5,
rip5,
tip5,
tup5,
urp5,
err3,
ire3,
rei3,
ret3,
rit3,
rue3,
rut3,
tie3,
tui3,
ure3,
ute3,
2 letter words:
pe4,
pi4,
up4,
er2,
et2,
it2,
re2,
te2,
ti2,
ur2,
ut2,
