Rules:
Flats are always a 3 wave structure.
Wave A is a three wave pattern and never a Triangle.
Structure = 3-3-5
Wave B is subdivided into a three wave pattern.
Wave B retraces to at least 105% of Wave A & typically up to the 138.2%.
Wave C always goes beyond Wave A.
Wave C always subdivide into 5 wave structures: a Diagonal or an Impulse wave.
Guidelines:
Waves C usually goes between the 100% to the 161.8% of Wave A.
Waves A and C usually are not Equal in length.