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