An explanation on subsequent of the ongoing fourth wave:
In my view, forming of a triangle pattern on the ongoing fourth wave is possible. A zigzag [ a – triangle b – c ] up could be labeled as wave (a) of a triangle, and then a possible zigzag [ leading diagonal a – b – c ] down as a wave (b) of the same triangle likely in progress, …
Note : I’ve considered another possibility, for internal waves of the ongoing fourth wave, on the second chart.
“A triangle appears to reflect a balance of forces, causing a sideways movement that is usually associated with decreasing volume and volatility. the triangle pattern contains five overlapping waves that subdivide 3-3-3-3-3 and are labeled A-B-C-D-E.”