A lot of people don't know that there are existing modifications/enhancements for R. N. Elliott's original Wave Principle.
One I've been studying and applying for a while is "Harmonic" Elliott Wave.
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The primary difference between original Elliott Wave & Harmonic Elliott Wave is the impulsive sequence.
Ian Copsey, the creator of HEW, modified Elliott's original impulsive structure believing he found a "harmonic" pattern between waves.
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As you can see, the impulse sequence in HEW consists of two impulses linked by a correction labeled as "ABC". That, in turn, completes one single Wave 1,3, or 5.