9 letter words:
greegrees11,
8 letter words:
greegree10,
6 letter words:
eggers8,
serger7,
5 letter words:
egger7,
egers6,
geese6,
grees6,
reges6,
serge6,
resee5,
serer5,
4 letter words:
eggs6,
eger5,
ergs5,
gees5,
gree5,
regs5,
errs4,
rees4,
seer4,
sere4,
3 letter words:
egg5,
erg4,
gee4,
reg4,
seg4,
ere3,
err3,
ers3,
ree3,
res3,
see3,
ser3,
2 letter words:
er2,
es2,
re2,