S&P -Big 'What if'

This is a HUGE 'what if' scenario. Only going by past 4 corrections. Similar angle of decline, similar time frames. I posted this chart of what could POSSIBLY happen. I am not great at predicting the future that far out. But as a trader, one should notice patterns in the past and see if those patterns repeat. Take this chart with a grain of salt.

Chart readily open for comments/suggestions