using System;

namespace Code_Coach_Challenge
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] words = {
                "home",
                "programming",
                "victory",
                "C#",
                "football",
                "sport",
                "book",
                "learn",
                "dream",
                "fun"
            };
            string letter = Console.ReadLine();

            bool f=false;
            for(int count=0;count<10;count++){
                if(words[count].Contains(letter)){
                  Console.WriteLine(words[count]);
                  f=true;
                }
            }
        if(!f)
            Console.WriteLine("No mach");
        }
    }
}