using System;

public class Program

{

    public static void Main()

    {

        char ch;

            for (ch = 'a'; ch <= 'z'; ch ++)

            {

                Console.Write("{0} ", ch);

            }

             Console.WriteLine();

            for (ch = 'A'; ch <= 'Z'; ch ++)

            {

                Console.Write("{0} ", ch);

            }

                Console.WriteLine();

        }

    }

​