5 letter words:
feers8,
feres8,
frees8,
reefs8,
sefer8,
egers6,
geres6,
grees6,
grese6,
reges6,
serge6,
4 letter words:
fegs8,
feer7,
fees7,
fere7,
free7,
reef7,
refs7,
serf7,
eger5,
ergs5,
gees5,
gere5,
gree5,
regs5,
eres4,
rees4,
seer4,
sere4,
3 letter words:
feg7,
efs6,
erf6,
fee6,
fer6,
fes6,
ref6,
erg4,
gee4,
reg4,
seg4,
ere3,
ers3,
ree3,
res3,
see3,
ser3,
2 letter words:
ef5,
fe5,
ee2,
er2,
es2,
re2,