9 letter words:
gonococci16,
6 letter words:
cocoon10,
cooing9,
5 letter words:
cocci11,
conic9,
cogon8,
coign8,
congo8,
incog8,
4 letter words:
coco8,
cion6,
coin6,
coni6,
coon6,
icon6,
goon5,
3 letter words:
cig6,
cog6,
con5,
coo5,
gin4,
goo4,
nog4,
ion3,
noo3,
ono3,
2 letter words:
go3,
in2,
no2,
oi2,
on2,