return {
    {-3,-2},{-3,-1},{-3,0},{-3,1},{-3,2},{3,-2},{3,-1},{3,0},{3,1},{3,2},
    {-2,-3},{-1,-3},{0,-3},{1,-3},{2,-3},{-2,3},{-1,3},{0,3},{1,3},{2,3}
}