D12121212121313232233132332313231323133313233313113313232222231   >>    D1212121212131323223313233231323132313331323331311331323222223   <<    D12121212121313232233132332313231323133313233313113313232222233   >>      D12121212121313232233132332313231323133313233313113313232222232   >>