5 letter words:
ester5,
reest5,
resee5,
reset5,
steer5,
stere5,
terse5,
trees5,
4 letter words:
erst4,
rees4,
rest4,
rete4,
rets4,
seer4,
sere4,
tees4,
tree4,
tres4,
3 letter words:
ere3,
ers3,
ree3,
res3,
ret3,
see3,
ser3,
set3,
tee3,
2 letter words:
er2,
es2,
et2,
re2,