D12121212121313232233132332313231323133313233313113313232213232222221   >>    D1212121212131323223313233231323132313331323331311331323221323222222   <<    D12121212121313232233132332313231323133313233313113313232213232222223   >>      D12121212121313232233132332313231323133313233313113313232213232222222   >>