using System;

public class NestedWhileLoopProgram

{

    public static void Main()

    {

          int i=1;    

          while(i<=3)   

          {  

              int j = 1;  

              while (j <= 3)  

              {  

                  Console.WriteLine(i+" "+j);  

                  j++;  

              } 

              Console.WriteLine("End of iteratoin number "+i +" of while loop");

              i++;  

          }    

    }

}