9 letter words:
xenogenic19,
6 letter words:
coxing16,
exonic15,
exogen14,
coigne9,
congee9,
coning9,
conine8,
engine7,
5 letter words:
xenic14,
exing13,
exine12,
xenon12,
coign8,
conge8,
genic8,
incog8,
conin7,
niece7,
nonce7,
genie6,
4 letter words:
exec13,
exon11,
nixe11,
oxen11,
cine6,
cion6,
coin6,
cone6,
coni6,
conn6,
icon6,
nice6,
once6,
gene5,
gien5,
gone5,
ogee5,
nene4,
neon4,
nine4,
none4,
3 letter words:
cox12,
gox11,
nix10,
cig6,
cog6,
cee5,
con5,
ice5,
ego4,
eng4,
gee4,
gen4,
gie4,
gin4,
neg4,
nog4,
eon3,
inn3,
ion3,
nee3,
one3,
2 letter words:
ex9,
ox9,
xi9,
go3,
en2,
in2,
ne2,
no2,
oe2,
oi2,
on2,