using System;


class LettersCombinations
{
    static void Main(string[] args)
    {
        char start = char.Parse(Console.ReadLine());
        char end = char.Parse(Console.ReadLine());
        char toSkip = char.Parse(Console.ReadLine());

        int combinations = 0;

        for (char firstLetter = start; firstLetter <= end; firstLetter++)
        {
            for (char secondLetter = start; secondLetter <= end; secondLetter++)
            {
                for (char thirdLetter = start; thirdLetter <= end; thirdLetter++)
                {
                    if (firstLetter != toSkip && secondLetter != toSkip && thirdLetter != toSkip)
                    {
                        Console.Write(" {0}{1}{2}", firstLetter, secondLetter, thirdLetter);
                        combinations++;
                    }
                }
            }
        }

        Console.WriteLine(" {0}", combinations);
    }
}