9 letter words:
oppugnant14,
6 letter words:
oppugn11,
popgun11,
nougat7,
5 letter words:
panto7,
punto7,
puton7,
unapt7,
gaunt6,
guano6,
tango6,
tonga6,
ungot6,
tauon5,
4 letter words:
pupa8,
pang7,
pong7,
pung7,
atop6,
pant6,
pout6,
puna6,
punt6,
upon6,
agon5,
gaun5,
gnat5,
goat5,
gout5,
guan5,
tang5,
toga5,
tong5,
tung5,
anon4,
aunt4,
auto4,
nona4,
nota4,
noun4,
tuna4,
unto4,
3 letter words:
app7,
pap7,
pop7,
pup7,
gap6,
pug6,
apo5,
apt5,
nap5,
opt5,
pan5,
pat5,
pot5,
pun5,
put5,
tap5,
top5,
tup5,
upo5,
ago4,
gan4,
gat4,
gnu4,
goa4,
got4,
gun4,
gut4,
nag4,
nog4,
tag4,
tog4,
tug4,
ant3,
nan3,
not3,
nun3,
nut3,
oat3,
out3,
tan3,
tao3,
tau3,
ton3,
tun3,
uta3,
2 letter words:
op4,
pa4,
up4,
ag3,
go3,
an2,
at2,
na2,
no2,
nu2,
on2,
ta2,
to2,
un2,
ut2,