def debug_print_child_tree(nodes, root, indent):
    print_str = ""
    for i in range(indent):
        print_str += '\t'

    print_str += "Node "+str(root)+" Children: "

    for child in nodes[root].child_set:
        print_str += str(child)+","

    print print_str

    indent += 1

    for child in nodes[root].child_set:
        debug_print_child_tree(nodes, child, indent)