D12121212121313232233132332313231323133313233313113313232211312131   >>    D1212121212131323223313233231323132313331323331311331323221131213   <<    D12121212121313232233132332313231323133313233313113313232211312133   >>      D12121212121313232233132332313231323133313233313113313232211312132   >>