6 letter words:
humbug14,
5 letter words:
bunch12,
munch12,
4 letter words:
chub11,
chum11,
much11,
chug10,
hung8,
numb8,
bung7,
3 letter words:
hub8,
hum8,
bum7,
cub7,
cum7,
hug7,
ugh7,
bug6,
gum6,
hun6,
mug6,
bun5,
mun5,
nub5,
gnu4,
gun4,
2 letter words:
hm7,
uh5,
mu4,
um4,
nu2,
un2,