System.out.println("Root node: " + html.getRoot());
        System.out.println("Parent Node: ");
        System.out.println("\tZuniga");
        System.out.println("\thead");
        System.out.println("\tbody");
        System.out.println("\tul");
        System.out.println("\th2");

        System.out.println("Siblings: ");
        System.out.println("\thead and body");
        System.out.println("\tmeta and title");
        System.out.println("\tul, h1 and h2");
        System.out.println("\tli and li");

        System.out.println("One level subtrees: ");

        System.out.println("\tZuniga - head/body ");
        System.out.println("\thead - meta/title ");
        System.out.println("\tbody - ul/h1/h2 ");
        System.out.println("\tul - li/li ");



        System.out.println("Nodes per level: ");
        System.out.println("\tLevel 0: 1");
        System.out.println("\tLevel 1: 2");
        System.out.println("\tLevel 2: 5");
        System.out.println("\tLevel 3: 3");

        System.out.println("Depth: " + html.getDepth());
        System.out.println("Degree of each one-level subtree: ");
        System.out.println("\tSubtree Zuniga: 2");
        System.out.println("\tSubtree head: 2");
        System.out.println("\tSubtree body: 3");
        System.out.println("\tSubtree li: 2");
        System.out.println("\tSubtree h2: 1");

        System.out.println("Breadth First \n\tZuniga, head, body, meta, title, ul, h1, h2, li, li a");
        System.out.println("Preorder \n\tZuniga, head, meta, title, body, ul, li, li, h1, h2, a");
        System.out.println("Postorder \n\tmeta, title, head, li, li, ul, a, h2, h1, body, html ");