9 letter words:
congeeing13,
ionogenic12,
8 letter words:
coigning12,
cooeeing11,
oncogene11,
engining10,
nonionic10,
7 letter words:
coining10,
conning10,
coniine9,
ginning9,
ingoing9,
ongoing9,
ionogen8,
neogene8,
nooning8,
6 letter words:
coigne9,
congee9,
congii9,
coning9,
cooing9,
conine8,
eocene8,
geeing8,
gieing8,
neocon8,
noggin8,
engine7,
gonion7,
goonie7,
inning7,
nonego7,
noogie7,
ionone6,
5 letter words:
cogon8,
coign8,
conge8,
congo8,
genic8,
icing8,
incog8,
conin7,
cooee7,
going7,
ionic7,
niece7,
nonce7,
genie6,
genii6,
inion5,
ninon5,
onion5,
4 letter words:
cine6,
cion6,
coin6,
cone6,
coni6,
conn6,
coon6,
gogo6,
gong6,
icon6,
nice6,
nogg6,
once6,
gene5,
gien5,
gone5,
goon5,
ogee5,
nene4,
neon4,
nine4,
none4,
noon4,
3 letter words:
cig6,
cog6,
cee5,
con5,
coo5,
egg5,
gig5,
ice5,
igg5,
ego4,
eng4,
gee4,
gen4,
gie4,
gin4,
goo4,
neg4,
nog4,
eon3,
inn3,
ion3,
nee3,
noo3,
one3,
ono3,
2 letter words:
go3,
en2,
in2,
ne2,
no2,
oe2,
oi2,
on2,