D12121212121313232233132332313231333132313233313113313232321311231   >>    D1212121212131323223313233231323133313231323331311331323232131123   <<    D12121212121313232233132332313231333132313233313113313232321311233   >>      D12121212121313232233132332313231333132313233313113313232321311232   >>