5 letter words:
paper9,
piper9,
4 letter words:
perp8,
pipe8,
prep8,
repp8,
aper6,
pair6,
pare6,
pear6,
peri6,
pier6,
rape6,
reap6,
ripe6,
3 letter words:
app7,
pap7,
pep7,
pip7,
ape5,
par5,
pea5,
per5,
pia5,
pie5,
rap5,
rep5,
rip5,
air3,
are3,
ear3,
era3,
ire3,
rai3,
rei3,
ria3,
2 letter words:
pa4,
pe4,
pi4,
ae2,
ai2,
ar2,
er2,
re2,