I'm honestly not even sure how to go about decipering it
Having all sprites that compose a single animation on a single sheet, rather than split between multiple PNGs would be more approachable.
For example it seems like 1A_1, 1A_2, and 1A_3 each contain one third of a different animation, and in order to fit the whole thing together you need to take a fraction of 1A_1, a fraction of 1A_2, and a fraction of 1A_3....And this seems to be the case for most of the animations