== Shows how to perform deletion in BST, variant 4.
<ul><li><a href="//commons.wikimedia.org/wiki/File:Binary_search_tree_delete_14.svg" title="File:Binary search tree delete 14.svg">Binary_search_tree_delete_14.svg</a>: movax</li>
<li><a href="//commons.wikimedia.org/wiki/File:Binary_search_tree.svg" title="File:Binary search tree.svg">Binary_search_tree.svg</a>: <a href="//commons.wikimedia.org/wiki/User:Booyabazooka" class="mw-redirect" title="User:Booyabazooka">Booyabazooka</a></li>
<li><a href="//commons.wikimedia.org/wiki/File:Binary_search_tree_delete_13.svg" title="File:Binary search tree delete 13.svg">Binary_search_tree_delete_13.svg</a>: movax</li>
<li>derivative work: movax</li></ul>
<ul><li><a href="//commons.wikimedia.org/wiki/File:Binary_search_tree.svg" title="File:Binary search tree.svg">Binary_search_tree.svg</a></li>
<li><a href="//commons.wikimedia.org/wiki/File:Binary_search_tree_delete_14.svg" title="File:Binary search tree delete 14.svg">Binary_search_tree_delete_14.svg</a></li></ul>