How can I distinguish between the ABCD and the ThreeDrive?

Hi all,

  1. great website, great free content. I really appreciate that.
  2. I have a beginner question for you … and here it is:

In the school of pipsology you describe both above mentioned harmonic pattern:

For me, the ThreeDrive is just a prolonged version of the ABCD where at point D of ABCD I am exactly on the same position as on the 2 of the ThreeDrive.

How can I now know which harmonic pattern is valid (distinguish the two)?
If its the ABCD I am fine with a short at that position, if it is the ThreeDrive is goes further up to the 3 and I eventuelly run in my SL.
Or do I just lay my SL behind the possible 3?

Do you understand my problem?

I would appreciate any hints on that problem.

Greetings Dave

bump bump
Anybody can help?