6 letter words:
offers12,
5 letter words:
offer11,
feres8,
fores8,
frees8,
froes8,
reefs8,
erose5,
4 letter words:
effs10,
offs10,
fees7,
fere7,
foes7,
fore7,
free7,
froe7,
reef7,
refs7,
serf7,
eros4,
ores4,
rees4,
roes4,
rose4,
seer4,
sere4,
sore4,
3 letter words:
eff9,
off9,
efs6,
fee6,
fer6,
fes6,
foe6,
for6,
fro6,
ref6,
ere3,
ers3,
oes3,
ore3,
ors3,
ose3,
ree3,
res3,
roe3,
see3,
ser3,
2 letter words:
ef5,
fe5,
of5,
er2,
es2,
oe2,
or2,
os2,
re2,
so2,