using System;
using System.Numerics;

namespace Demo
{
    class Program
    {
        static void Main(string[] args)
        {
            int start = int.Parse(Console.ReadLine());
            int end = int.Parse(Console.ReadLine());

            //for (int i = start; i <= end; i++)
            //{
            //    Console.Write($"{(char)i} ");
            //}
            //Console.WriteLine();
            for (char i = (char)start; i <= (char)end; i++)
            {
                Console.Write($"{i} ");
            }
        }
    }
}