5 letter words:
grief9,
grift9,
refit8,
tiger6,
4 letter words:
frig8,
gift8,
fire7,
fret7,
frit7,
reft7,
reif7,
rife7,
rift7,
tref7,
girt5,
gite5,
grit5,
trig5,
rite4,
tier4,
tire4,
3 letter words:
fig7,
eft6,
fer6,
fet6,
fie6,
fir6,
fit6,
ref6,
rif6,
erg4,
get4,
gie4,
git4,
reg4,
rig4,
teg4,
ire3,
rei3,
ret3,
tie3,
2 letter words:
ef5,
fe5,
if5,
er2,
et2,
it2,
re2,
ti2,