using System;

public class Program

{

    public static void Main()

    {

        //Console.WriteLine("Hello World");

        char a = char.Parse(Console.ReadLine());

        char b = char.Parse(Console.ReadLine());

        char c = char.Parse(Console.ReadLine());

        for (char i1 = a; i1 <= b; i1++)

        {

            for (char i2 = a; i2 <= b; i2++)

            {

                for (char i3 = a; i3 <= b; i3++)

                {

                    if(i1 != c && i2 != c && i3 != c)

                    {

                        Console.Write("{0}{1}{2} ",i1,i2,i3);

                    }

                }

            }

        }

    }

}