6 letter words:
convex18,
5 letter words:
coven10,
4 letter words:
exec13,
exon11,
oxen11,
cove9,
eevn7,
even7,
evoe7,
neve7,
oven7,
cone6,
once6,
3 letter words:
vex13,
vox13,
cox12,
exo10,
nox10,
eve6,
evo6,
vee6,
voe6,
cee5,
con5,
eco5,
een3,
ene3,
eon3,
nee3,
one3,
2 letter words:
ex9,
ox9,
ee2,
en2,
ne2,
no2,
oe2,
on2,