{{0, 1, 1, 1}, {0, 1, 1, 1}, {-1, 0, 0, 1}, {-1, -1, 1, 1}, {-1, -1, 1, 1}, {0, 0, 0, 0}, {-1, -1, -1, 0}, {-1, 0, 0, 1}, {-1, -1, 0, -1}}