7 letter words:
reefers10,
6 letter words:
freers9,
freres9,
reefer9,
refers9,
emeers8,
seemer8,
5 letter words:
femes10,
feres8,
freer8,
frees8,
frere8,
reefs8,
refer8,
emeer7,
merer7,
meres7,
resee5,
serer5,
4 letter words:
feme9,
fems9,
fees7,
fere7,
free7,
reef7,
refs7,
serf7,
emes6,
mere6,
rems6,
seem6,
seme6,
errs4,
rees4,
seer4,
sere4,
3 letter words:
fem8,
efs6,
fee6,
fer6,
fes6,
ref6,
eme5,
ems5,
rem5,
ere3,
err3,
ers3,
ree3,
res3,
see3,
ser3,
2 letter words:
ef5,
fe5,
em4,
me4,
er2,
es2,
re2,