5 letter words:
forgo9,
fugio9,
guiro6,
4 letter words:
frow10,
woof10,
frig8,
frog8,
frug8,
goof8,
grow8,
four7,
roof7,
giro5,
3 letter words:
fig7,
fog7,
fug7,
wig7,
wog7,
fir6,
for6,
fou6,
fro6,
fur6,
rif6,
row6,
woo6,
goo4,
gor4,
rig4,
rug4,
our3,
2 letter words:
if5,
of5,
ow5,
wo5,
go3,
oi2,
or2,