7 letter words:
upgoing11,
6 letter words:
ouping9,
5 letter words:
gipon8,
oping8,
pingo8,
going7,
oggin7,
4 letter words:
ping7,
pong7,
pung7,
upgo7,
ging6,
gong6,
gung6,
nogg6,
noup6,
pion6,
upon6,
ingo5,
3 letter words:
gip6,
gup6,
pig6,
pug6,
gig5,
igg5,
nip5,
oup5,
pin5,
piu5,
poi5,
pun5,
upo5,
gin4,
gio4,
gnu4,
gon4,
gun4,
nog4,
ion3,
uni3,
2 letter words:
op4,
pi4,
po4,
up4,
gi3,
go3,
gu3,
ug3,
in2,
io2,
no2,
nu2,
oi2,
on2,
ou2,
un2,