6 letter words:
griffs13,
grifts10,
5 letter words:
griff12,
riffs11,
stiff11,
tiffs11,
frigs9,
gifts9,
grift9,
first8,
frits8,
rifts8,
girts6,
grist6,
grits6,
trigs6,
4 letter words:
riff10,
tiff10,
figs8,
frig8,
gift8,
firs7,
fist7,
fits7,
frit7,
rifs7,
rift7,
sift7,
girt5,
gist5,
gits5,
grit5,
rigs5,
trig5,
iris4,
stir4,
3 letter words:
iff9,
fig7,
fir6,
fit6,
ifs6,
rif6,
git4,
rig4,
its3,
sir3,
sit3,
sri3,
tis3,
2 letter words:
if5,
is2,
it2,
si2,
ti2,