using System;

public class Program

{

    public static void Main()

    {

        int[,] arr= new int[4,4]{{1,2,3,4},{5,6,7,8},{9,10,11,12},{13,14,15,16}};

        int i,j;

        for( i=0; i<4; i++){

            for(j=0;(( j)==(i) || (j) == (i-1)&& (j)==(i-2) ); j++)

            {

                    Console.Write(arr[i,j] + " ");

                //  1    5   6    10    11    15   16   for(i = 0, j = 0; i < p, j < q; i++, j++)

            }

        }

    }

}