6 letter words:
pigpen11,
upping11,
5 letter words:
pinup9,
genip8,
unpeg8,
4 letter words:
pipe8,
ping7,
pung7,
pein6,
peni6,
pine6,
genu5,
gien5,
3 letter words:
pep7,
pip7,
pup7,
gip6,
gup6,
peg6,
pig6,
pug6,
nep5,
nip5,
pen5,
pie5,
pin5,
piu5,
pun5,
eng4,
gen4,
gie4,
gin4,
gnu4,
gue4,
gun4,
neg4,
nie3,
uni3,
2 letter words:
pe4,
pi4,
up4,
gi3,
gu3,
ug3,
en2,
in2,
ne2,
nu2,
un2,