x1 x2 block y -1 -1 1 80.5 -1 1 1 81.5 1 -1 1 82.0 1 1 1 83.5 0 0 1 83.9 0 0 1 84.3 0 0 1 84.0 0 0 2 79.7 0 0 2 79.8 0 0 2 79.5 1.414 0 2 78.4 -1.414 0 2 75.6 0 1.414 2 78.5 0 -1.414 2 77.0