9 letter words:
guncotton12,
6 letter words:
congou9,
cotton8,
5 letter words:
cogon8,
congo8,
conto7,
count7,
outgo6,
ungot6,
4 letter words:
conn6,
coon6,
coot6,
cunt6,
unco6,
goon5,
gout5,
tong5,
tung5,
noon4,
noun4,
onto4,
otto4,
toon4,
toot4,
tout4,
unto4,
3 letter words:
cog6,
con5,
coo5,
cot5,
cut5,
gnu4,
goo4,
got4,
gun4,
gut4,
nog4,
tog4,
tug4,
noo3,
not3,
nun3,
nut3,
ono3,
oot3,
out3,
ton3,
too3,
tot3,
tun3,
tut3,
2 letter words:
go3,
no2,
nu2,
on2,
to2,
un2,
ut2,
