6 letter words:
convex18,
5 letter words:
coven10,
4 letter words:
exec13,
exon11,
oxen11,
cove9,
even7,
neve7,
oven7,
cone6,
once6,
3 letter words:
vex13,
vox13,
cox12,
eve6,
vee6,
voe6,
cee5,
con5,
eon3,
nee3,
one3,
2 letter words:
ex9,
ox9,
en2,
ne2,
no2,
oe2,
on2,