using System;

namespace CharactersInRange
{
    class Program
    {
        static void Main(string[] args)
        {
            char firstChar = char.Parse(Console.ReadLine());
            char secondChar = char.Parse(Console.ReadLine());
            char temp;

            if (secondChar < firstChar)
            {
                temp = firstChar;
                firstChar = secondChar;
                secondChar = temp;
            }

            PrintCharactersInRange(firstChar, secondChar);
        }

        static void PrintCharactersInRange(char firstChar, char secondChar)
        {
            for (int i = firstChar + 1; i < secondChar; i++)
            {
                Console.Write((char)i + " ");
            }
        }
    }
}