D12121212121313232233132332313231323133313233313113313232213221121   >>    D1212121212131323223313233231323132313331323331311331323221322112   <<    D12121212121313232233132332313231323133313233313113313232213221123   >>      D12121212121313232233132332313231323133313233313113313232213221122   >>