5 letter words:
xenon12,
conne7,
nonce7,
4 letter words:
exec13,
exon11,
oxen11,
cone6,
conn6,
once6,
nene4,
neon4,
none4,
3 letter words:
cox12,
exo10,
nox10,
cee5,
con5,
eco5,
een3,
ene3,
eon3,
nee3,
non3,
one3,
2 letter words:
ex9,
ox9,
ee2,
en2,
ne2,
no2,
oe2,
on2,