7 letter words:
fubbing15,
5 letter words:
fungi9,
4 letter words:
fung8,
bing7,
bung7,
3 letter words:
fib8,
fub8,
bib7,
bub7,
fig7,
fug7,
gif7,
big6,
bug6,
fin6,
fun6,
gib6,
gub6,
bin5,
bun5,
nib5,
nub5,
gin4,
gnu4,
gun4,
uni3,
2 letter words:
if5,
bi4,
gi3,
gu3,
ug3,
in2,
nu2,
un2,