{{-1, 2, 1, 1}, {1, 2, 2, 1}, {-2, -1, -1, 1}, {-1, -1, 1, 1}, {1, 1, -1, -1}, {-2, -2, 2, 2}, {-1, -2, -2, -1}, {-1, 1, 1, 2}, {-1, -1, 1, -2}}