5 letter words:
ponga8,
punga8,
guano6,
4 letter words:
gapo7,
gaup7,
pang7,
pong7,
pung7,
upgo7,
noup6,
oupa6,
puna6,
upon6,
agon5,
gaun5,
guan5,
3 letter words:
gap6,
gup6,
pug6,
apo5,
nap5,
oup5,
pan5,
poa5,
pun5,
upo5,
ago4,
gan4,
gau4,
gnu4,
goa4,
gon4,
gun4,
nag4,
nog4,
2 letter words:
op4,
pa4,
po4,
up4,
ag3,
go3,
gu3,
ug3,
an2,
na2,
no2,
nu2,
on2,
ou2,
un2,