7 letter words:
cocomat13,
5 letter words:
coact9,
cocoa9,
4 letter words:
camo8,
coca8,
coco8,
coma8,
atom6,
coat6,
coot6,
moat6,
moot6,
taco6,
toom6,
3 letter words:
cam7,
mac7,
moc7,
act5,
cat5,
coo5,
cot5,
mat5,
moa5,
moo5,
mot5,
oca5,
tam5,
tom5,
oat3,
oot3,
tao3,
too3,
2 letter words:
am4,
ma4,
mo4,
om4,
at2,
ta2,
to2,
