The ninth position in my grid is directly above grid #8, and is the last of the three portrait-oriented grid entries. It is also the final painting on the perimeter of the original grid of 11 paintings.
Combined with the painting in grid #8, we see the continuation of the gentle curve of the red-gray-blue arc. The texture however is different, since each of the 11 paintings was crumpled individually.
I like the strange rainbow-like effect seen at the bottom of this study.