5 letter words:
fjord16,
griff12,
gruff12,
fiord9,
fugio9,
gourd7,
guiro6,
4 letter words:
jiff17,
fuji14,
judo12,
diff11,
doff11,
duff11,
guff11,
riff10,
ruff10,
fido8,
ford8,
frig8,
frog8,
frug8,
four7,
drug6,
gird6,
grid6,
guid6,
dour5,
duro5,
giro5,
3 letter words:
jig11,
jog11,
jug11,
iff9,
off9,
dif7,
fid7,
fig7,
fog7,
fud7,
fug7,
fir6,
for6,
fou6,
fro6,
fur6,
rif6,
dig5,
dog5,
dug5,
gid5,
god5,
dor4,
dui4,
duo4,
gor4,
oud4,
rid4,
rig4,
rod4,
rug4,
udo4,
urd4,
our3,
2 letter words:
jo9,
if5,
of5,
do3,
go3,
id3,
od3,
oi2,
or2,