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\begin{verbatim}
#include<iostream.h>

#include<LINK/basic/DList.h>
#include<LINK/basic/List.h>

main()
{
        DList<int> dl;

        dl.insert(1);
        ContainerNode *cn = dl.insert(2);

        DList<int> dl2(dl);

        dl.unlink(cn);
        dl2.insert(cn); 


        cout << dl << endl; 
        cout << dl2 << endl; 
}
\end{verbatim}

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\begin{verbatim} 
(1)
(2 1 2)
\end{verbatim}

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