5 letter words:
griff12,
gruff12,
triff11,
grift9,
fruit8,
4 letter words:
guff11,
riff10,
ruff10,
tiff10,
tuff10,
frig8,
frug8,
gift8,
frit7,
furr7,
rift7,
turf7,
girr5,
girt5,
grit5,
trig5,
trug5,
tirr4,
3 letter words:
iff9,
fig7,
fug7,
gif7,
fir6,
fit6,
fur6,
rif6,
git4,
gur4,
gut4,
rig4,
rug4,
tig4,
tug4,
rit3,
rut3,
tui3,
2 letter words:
if5,
gi3,
gu3,
ug3,
it2,
ti2,
ur2,
ut2,