using System;

namespace Characters_in_Range
{
    class Program
    {
        static void Main(string[] args)
        {
            char firstCharacter = char.Parse(Console.ReadLine());
            char secondCharacter = char.Parse(Console.ReadLine());
            PrintCharactersRange(firstCharacter, secondCharacter);

        }
        public static void PrintCharactersRange(char firstCharacter, char secondCharacter)
        {
            if (firstCharacter < secondCharacter)
            {
                for (int i = firstCharacter + 1; i < secondCharacter; i++)
                {
                    Console.Write((char)i + " ");
                }
            }
            else
            {       
                for (int i = secondCharacter + 1; i < firstCharacter; i++)
                {
                    Console.Write((char)i + " ");
                }
            }
        }
    }
}