S&P500 to continue to yo-yo within small range?

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S&P dropped predictably to1996 today and then swung back up to 2003. My projected downswing Line C now moves another step to the east. I expect a mini peak at 2005, when it will bounce off Resistance Line B and move back towards 1996 again. At some such downswing I expect it to break through Support Line A and give is a real downswing.