Ideal Butterfly pattern elements: • Precise 78.6% B point retracement of XA leg. • BC projection must be at least a 1.618. • Equivalent AB=CD pattern is minimum requirement, but the Alternate 1.27 AB=CD is the most common. • 1.27 XA projection most critical number in the Potential Reversal Zone (PRZ). • No 1.618 XA projection. • C point within range of 0.382–0.886 retracement.