using System;

public class Exercise11

{

    public static void Main()

    {   

        int i,j;//int =i;

        //Console.WriteLine("Please Enter rows numbers:");

        //n=Convert.ToInt16(Console.ReadLine());

        Console.WriteLine("The pattern like:");

        for(i=1;i<=4;i++)

        {

            for(j=1;j<=i;j++)

            {

                Console.Write(i);

            }

            Console.WriteLine("");

        }

    }

}