just for educational purposes
case study

harmonic butter fly rules
like B point should be 0.786 retracement of XA leg
And C point should be 0.886 or 0.382 or in between if near values good and is retracement of AB leg
and D 1.618 or 2.24 of BC and 1.27 of XA

these are for butter fly for other patterns retracements will vary

disclaimer- this is not any investment call or idea , this just my view and it can go wrong ,this is only for educational purposes trade at your own risk :)
Butterfly

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