using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _06_Problem
{
    class Program
    {
        static void Main(string[] args)
        {
            char  first = char.Parse(Console.ReadLine());
            char second = char.Parse(Console.ReadLine());
            char stop = char.Parse(Console.ReadLine());
            int count = 0;
            for (char a = first; a <= second; a++)
            {
                for (char b = first; b <= second; b++)
                {
                    for (char c = first; c <= second; c++)
                    {
                        if (a == stop || b == stop || c == stop)
                        {
                          // do nothing
                        }
                        else
                        {
                            // print all kombinations without c
                            Console.Write("{0}{1}{2} ", a, b, c);
                            count++;
                        }
                    }
                }
            }
            Console.Write(count);
        }
    }
}