static private $regionRows = array(
                        1, 1, 1, 1, 1, 1, 1, 1, // Number of regions per row
                        1, 2, 2, 2, 2, 2, 2, 4, 4, 4, 4, 4, 4, 6, 6, 6,
                        1, 1, 1, 1, 1, 1);