static private $interleavedBlocks = array(
                        1, 1, 1, 1, 1, 1, 1, 1, // Number of blocks
                        1, 1, 1, 1, 1, 1, 2, 2, 4, 4, 4, 4, 6, 6, 8, 8,
                        1, 1, 1, 1, 1, 1);