6 letter words:
ionone6,
5 letter words:
xenon12,
onion5,
4 letter words:
exon11,
nixe11,
oxen11,
neon4,
nine4,
none4,
noon4,
3 letter words:
nix10,
oxo10,
eon3,
inn3,
ion3,
noo3,
one3,
ono3,
2 letter words:
ex9,
ox9,
xi9,
en2,
in2,
ne2,
no2,
oe2,
oi2,
on2,