8 letter words:
piperine12,
7 letter words:
nippier11,
6 letter words:
yippee13,
yippie13,
pinery11,
pyrene11,
nipper10,
pipier10,
pinier8,
repine8,
5 letter words:
nippy12,
peery10,
piney10,
piper9,
eyrie8,
preen7,
repin7,
ripen7,
4 letter words:
pipy11,
piny9,
prey9,
pyin9,
pyre9,
yipe9,
peep8,
perp8,
pipe8,
prep8,
repp8,
eery7,
eyen7,
eyer7,
eyne7,
eyre7,
neep6,
peen6,
peer6,
pein6,
pere6,
peri6,
pier6,
pine6,
pirn6,
pree6,
ripe6,
erne4,
rein4,
3 letter words:
pry8,
pye8,
yep8,
yip8,
pep7,
pip7,
eye6,
rye6,
yen6,
yin6,
nip5,
pee5,
pen5,
per5,
pie5,
pin5,
rep5,
rip5,
ere3,
ern3,
ire3,
nee3,
ree3,
rei3,
rin3,
2 letter words:
ye5,
pe4,
pi4,
en2,
er2,
in2,
ne2,
re2,