5 letter words:
fruit8,
refit8,
uteri5,
4 letter words:
fire7,
fret7,
frit7,
reft7,
reif7,
rife7,
rift7,
tref7,
turf7,
etui4,
rite4,
tier4,
tire4,
true4,
3 letter words:
eft6,
fer6,
fet6,
feu6,
fie6,
fir6,
fit6,
fur6,
ref6,
rif6,
ire3,
rei3,
ret3,
rue3,
rut3,
tie3,
tui3,
ute3,
2 letter words:
ef5,
fe5,
if5,
er2,
et2,
it2,
re2,
ti2,
ut2,