#include <bits/stdc++.h>
#define rep(i,n) for(ll (i)=0;(i)<(n);(i)++)
#define repi(i,a,b) for(ll (i)=(a);(i)<(b);(i)++)
#define SIZE_OF_ARRAY(array)    (sizeof(array)/sizeof(array[0]))
typedef long long ll;
using namespace std;

int main(){
  ios::sync_with_stdio(false);
  cin.tie(nullptr);

  string s;
  cin >> s;
  char a;
  int num = 0;
  rep(i,8){
    rep(j,8){
      cin >> a;
      if(a!='.'){
	num++;
      }
    }
  }
  if(num%2==0){
    cout << s << endl;
  }else{
    if(s=="yukiko"){
      cout << "oda" << endl;
    }else{
      cout << "yukiko" << endl;
    }
  }
  return 0;
  }