using System;

namespace P14
{
    class Program
    {
        static void Main(string[] args)
        {
            var start = Console.ReadLine()[0];
            var end = Console.ReadLine()[0];
            var useless = Console.ReadLine()[0];

            for (char i = start; i <= end; i++)
            {
                if (i != useless)
                {
                    for (char j = start; j <= end; j++)
                    {
                        if (j != useless)
                        {
                            for (char k = start; k <= end; k++)
                            {
                                if (k != useless)
                                {
                                    Console.WriteLine($"{i}{j}{k}");
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}