Not the creator, but maybe I can give you some insight.
First row is sword strike.
Second row idle.
Third row running.
Last row, the 3 frames:
1st frame is press down or ducking.
2nd frame is pressing up or raising your head
3rd frame is mid air jump. It could also be fallen down, on the ground, shooting forward as if you're flying, or maybe a ghost form if you shade it lighter, depends on what you want to do with it.