6 letter words:
cobnut10,
5 letter words:
bunco9,
count7,
4 letter words:
bout6,
bunt6,
cunt6,
unco6,
unto4,
3 letter words:
cob7,
cub7,
bot5,
bun5,
but5,
con5,
cot5,
cut5,
nob5,
nub5,
tub5,
not3,
nut3,
out3,
ton3,
tun3,
2 letter words:
bo4,
no2,
nu2,
on2,
to2,
un2,
ut2,