5 letter words:
femes10,
feres8,
frees8,
reefs8,
meres7,
4 letter words:
feme9,
fems9,
fees7,
fere7,
free7,
reef7,
refs7,
serf7,
emes6,
mere6,
rems6,
seem6,
seme6,
rees4,
seer4,
sere4,
3 letter words:
fem8,
efs6,
fee6,
fer6,
fes6,
ref6,
eme5,
ems5,
rem5,
ere3,
ers3,
ree3,
res3,
see3,
ser3,
2 letter words:
ef5,
fe5,
em4,
me4,
er2,
es2,
re2,