6 letter words:
impugn11,
umping11,
4 letter words:
gimp9,
ping7,
pung7,
muni6,
3 letter words:
imp7,
ump7,
gip6,
gum6,
mig6,
mug6,
pig6,
pug6,
mun5,
nim5,
nip5,
pin5,
piu5,
pun5,
gin4,
gnu4,
gun4,
2 letter words:
mi4,
mu4,
pi4,
um4,
up4,
in2,
nu2,
un2,
