I don't think this is a crab pattern. The completion point is usually the 1. 618 of the xa leg. Perhaps you and I can both look it up to make sure.
Andre_Cardoso
⋅
Yes russelldaily, in fact both ratios are acceptable as you can check above, let's say this was my instinct talking, why the AB and not the XA ;), and in this case, on both possible ratios we have structure to give us clues.
And of course, there's allways a Bat in the middle ;)