D12121212121313232233132332313231333132313233313113313232213231231211   >>    D1212121212131323223313233231323133313231323331311331323221323123121   <<    D12121212121313232233132332313231333132313233313113313232213231231213   >>      D12121212121313232233132332313231333132313233313113313232213231231212   >>