6 letter words:
frutex16,
future9,
5 letter words:
cruet7,
curet7,
cuter7,
eruct7,
recut7,
truce7,
4 letter words:
crux13,
curf9,
fret7,
reft7,
terf7,
tref7,
turf7,
cert6,
crue6,
cure6,
curt6,
cute6,
ecru6,
true4,
3 letter words:
rex10,
tex10,
tux10,
eft6,
erf6,
fer6,
fet6,
feu6,
fur6,
ref6,
tef6,
cru5,
cue5,
cur5,
cut5,
ecu5,
rec5,
ruc5,
tec5,
ret3,
rue3,
rut3,
ure3,
ute3,
utu3,
2 letter words:
ex9,
xu9,
ef5,
fe5,
er2,
et2,
re2,
te2,
ur2,
ut2,