If you look at the shape of these waves from highs to lows, and lows to highs from Oct 2018 a pattern emerges. It is clear, that these waves follow a 3-wave structure. So if the pattern was to continue , since we completed an impulse up we shot get a corrective wave down, followed by one more impulse likely to new highs before crashing again. Sometimes, the simplest answer is the correct one. The name for this pattern is a triple zigzag. However, the last wave down can be an impulse in that case it would be a WXY correction.