using System;
using System.Collections;
using System.Collections.Generic;
 
class TEST{
	static void Main(){
		Sol mySol =new Sol();
		mySol.Solve();
	}
}

class Sol{
	public void Solve(){
		int cnt=0;
		for(int i=0;i<8;i++){
			for(int j=0;j<8;j++){
				if(Board[i][j]!='.')cnt++;
			}
		}
		Console.WriteLine(player[cnt%2]);
		
		
		
	}
	
	String[] player;
	String[] Board;
	public Sol(){
		player=new String[2];
		player[0]=rs();
		player[1]=player[0]=="oda"?"yukiko":"oda";
		Board=new String[8];
		for(int i=0;i<8;i++){
			Board[i]=rs();
		}
	}




	static String rs(){return Console.ReadLine();}
	static int ri(){return int.Parse(Console.ReadLine());}
	static long rl(){return long.Parse(Console.ReadLine());}
	static double rd(){return double.Parse(Console.ReadLine());}
	static String[] rsa(){return Console.ReadLine().Split(' ');}
	static int[] ria(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>int.Parse(e));}
	static long[] rla(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>long.Parse(e));}
	static double[] rda(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>double.Parse(e));}
}