We can have 3 main theories that persist until now about this impulse:
My favorite count is the black, about this we have talked before, under this idea we have an third wave extension formed by 2 wave extensions in it self.
Other one could be the red count, where we merge the 2 wave extensions into only one given that still showing correction from the end of i taking the top of 2)) (micro) as ii sub minuette
The 3rd theory (the least plausible) is the one that consider the fall as only one wave iii ) minuette.
The time usually (and other times the price) form some kind of symetry between waves 2 and 4 so lets see which one of this 3 are the better proxy for 4th wave.