D12121212121313233313123231323223313132322331323223313113313231133132333131211   >>    D1212121212131323331312323132322331313232233132322331311331323113313233313121   <<    D12121212121313233313123231323223313132322331323223313113313231133132333131213   >>      D12121212121313233313123231323223313132322331323223313113313231133132333131212   >>