5 letter words:
forgo9,
groof9,
rigor6,
4 letter words:
figo8,
frig8,
frog8,
goof8,
roof7,
giro5,
girr5,
goor5,
gori5,
3 letter words:
fig7,
fog7,
gif7,
fir6,
for6,
fro6,
oof6,
orf6,
rif6,
gio4,
goo4,
gor4,
rig4,
oor3,
roo3,
2 letter words:
if5,
of5,
gi3,
go3,
io2,
oi2,
oo2,
or2,