D12121212121313232233132332313231333132313233313113313231323132322112111   >>    D1212121212131323223313233231323133313231323331311331323132313232211211   <<    D12121212121313232233132332313231333132313233313113313231323132322112113   >>      D12121212121313232233132332313231333132313233313113313231323132322112112   >>