7 letter words:
fretful13,
truffle13,
6 letter words:
ruffle12,
truffe12,
fluter9,
5 letter words:
ruffe11,
tuffe11,
flute8,
luter5,
4 letter words:
luff10,
ruff10,
teff10,
tuff10,
felt7,
flue7,
fret7,
fuel7,
furl7,
left7,
reft7,
terf7,
tref7,
turf7,
lure4,
lute4,
rule4,
true4,
tule4,
3 letter words:
eff9,
eft6,
elf6,
erf6,
fer6,
fet6,
feu6,
flu6,
fur6,
ref6,
tef6,
elt3,
let3,
leu3,
lur3,
ret3,
rue3,
rut3,
tel3,
ule3,
ure3,
ute3,
2 letter words:
ef5,
fe5,
el2,
er2,
et2,
re2,
te2,
ur2,
ut2,