2R(with Green Dot) spotted at the right time.

Retracement and Reversal decoding the price movement.

Watch out for 2G(with Red Dot)* and you might be the lucky one to find the Top.

Watch out for 2R(with Green Dot)* and you might be the lucky one to find the Bottom.

For more details check out

* 2G(with Green Dot) and 2R(with Red Dot) also occur