class Node {
  public int data;
  public Node next;

  public Node(int _data, Node _next) {
    data = _data;
    next = _next;
  }
}

public class NodeClient {
  public static void main(String[] args) {
    Node a = new Node(10, null);
    Node b = new Node(70, a);
    Node c = new Node(20, null);
    Node d = new Node(90, c);
    Node e = new Node(30, d);
    c.next = b;
    System.out.println("a holds value "+a.data);
    System.out.println("b holds value "+b.data);
    System.out.println("c holds value "+c.data);
    System.out.println("d holds value "+d.data);
    System.out.println("e holds value "+e.data);
    System.out.println("node after b (that is a) holds value "+b.next.data);
    System.out.println("node after c (that is b) holds value "+c.next.data);
    System.out.println("node after d (that is c) holds value "+d.next.data);
    System.out.println("node after e (that is d) holds value "+e.next.data);
    System.out.println("node after the node after e (that is c) holds value "+e.next.next.data);
  }
}