1x1 2x1 1x1+2x1 2x2 3x3 4x4 5x5 6x6 8x8 1x1 2x1-zoom 3x1-zoom 2x2 5-grid-zoom 3x2-zoom 7-grid-zoom 4x2-zoom 3x3 1up_top_left+5 1up_top_left+7 1up_top_left+9 3up+4 3up+9