6 letter words:
refuse9,
5 letter words:
feres8,
frees8,
fusee8,
reefs8,
reuse5,
4 letter words:
fees7,
fere7,
feus7,
free7,
furs7,
fuse7,
reef7,
refs7,
serf7,
surf7,
rees4,
rues4,
ruse4,
seer4,
sere4,
suer4,
sure4,
user4,
3 letter words:
efs6,
fee6,
fer6,
fes6,
feu6,
fur6,
ref6,
ere3,
ers3,
ree3,
res3,
rue3,
see3,
ser3,
sue3,
use3,
2 letter words:
ef5,
fe5,
er2,
es2,
re2,
us2,