6 letter words:
clumpy15,
5 letter words:
lumpy12,
plumy12,
clump11,
4 letter words:
pumy11,
umpy11,
yump11,
puly9,
culm8,
lump8,
plum8,
3 letter words:
myc10,
cly8,
lym8,
ply8,
puy8,
yum8,
yup8,
cum7,
cup7,
ump7,
lum5,
plu5,
pul5,
2 letter words:
my7,
yu5,
mu4,
um4,
up4,
