6 letter words:
truffe12,
5 letter words:
ruffe11,
4 letter words:
ruff10,
teff10,
tuff10,
fret7,
reft7,
tref7,
turf7,
true4,
3 letter words:
eff9,
eft6,
fer6,
fet6,
feu6,
fur6,
ref6,
ret3,
rue3,
rut3,
ute3,
2 letter words:
ef5,
fe5,
er2,
et2,
re2,
ut2,
