# It means that it only remain nodes[0] in J</span>
        <span class="c1">#     J = None</span>
        <span class="c1"># print(&quot;\n Remove first occurence : &quot;, nodes[0].data)</span>
        <span class="c1"># print(&quot; J :\n&quot;, J)</span>
        <span class="c1"># print(&quot; K :\n&quot;, K)</span>

        <span class="c1"># J.plot(&quot; Left after removal of &quot; + repr(nodes[0].data))</span>
        <span class="c1"># K.plot(&quot; Right after removal of &quot; + repr(nodes[0].da