using System;
using System.Linq;

namespace No88_WhichOneIsNext
{
    internal class Program
    {
        static void Main(string[] args) {
            string s = Console.ReadLine();
            string first = s;
            string second = s == "oda" ? "yukiko" : "oda";
            int count = 0;
            for(int i = 0; i < 8; i++) {
                string b = Console.ReadLine();
                count += b.Count(x => x != '.');
            }
            Console.WriteLine(count % 2 == 0 ? first : second);
        }
    }
}