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Sorry I am just starting to learn and I have a lot of progress to make :)
Here is a chart with what I thought was a H&S : http://imgur.com/a/c6thu

It's possible! But symmetry is key. If the shoulders are near identical, the more strength. Also, volume should have same peaks with the Head volume highest.

I've seen these irregulars actually happen, so draw the neck line and see if prices convincingly drop below and stay.

I see! Thanks :)