import java.io.*;
class Wikitechy {
 public static void main(String[] args) {
  int val = 1, n = 4;
  for (int i = 1; i <= n; i++) 
  {
   for (int j = 0; j < i; j++) 
   {
    System.out.print(val + " ");
    val++;
   }
   System.out.println();
  }
 }
}