8 letter words:
prigging13,
7 letter words:
pigging12,
griping11,
rigging10,
6 letter words:
piggin10,
igging9,
riping9,
5 letter words:
piing8,
iring6,
4 letter words:
grip7,
ping7,
prig7,
grig6,
pirn6,
girn5,
grin5,
ring5,
3 letter words:
gip6,
pig6,
gig5,
igg5,
nip5,
pin5,
rip5,
gin4,
rig4,
rin3,
2 letter words:
pi4,
in2,