public class for_loops_nested
{
  public static void main (String[] args)
    {
      for (int j = 1; j <= 3; j++)
        {
          for (int i = 1; i <= 10; i++)
            {
              System.out.print (i);          
              System.out.print (" ");
            }
          System.out.println ();
        }      
    }
}