4 letter words:
dump9,
gimp9,
pfui9,
guid6,
3 letter words:
dif7,
fid7,
fig7,
fud7,
fug7,
imp7,
ump7,
dim6,
dip6,
dup6,
gip6,
gum6,
mid6,
mig6,
mud6,
mug6,
pig6,
pud6,
pug6,
dig5,
dug5,
gid5,
piu5,
dui4,
2 letter words:
if5,
mi4,
mu4,
pi4,
um4,
up4,
id3,