using System;

namespace ConsoleApp9
{
    class Program
    {
        static void Main(string[] args)
        {
            int[,] matrix = new int[4, 4];

            for (int i = 0; i < matrix.GetLength(0); i++)
            {
                for (int j = 0; j < matrix.GetLength(1); j++)
                {
                    matrix[i, j] = i + j;
                }
            }

            Console.WriteLine(string.Join(' ', matrix));
        }
    }
}