#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <utility>
#include <tuple>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <deque>
#include <unordered_map>
#include <unordered_set>
#include <bitset>
#include <cctype>
#include <functional>
#include <cassert>
using namespace std;

using ll = long long;
using ull = unsigned long long;
using Matrix = std::vector<std::vector<ll>>;
const int inf = 1000000000;
const ll INF = 1000000000000000000;
const ll mod = 998244353;
const ull mod_hash = (1UL << 61) - 1;
const std::vector<int> dx = {0, 1, 0, -1, 1, 1, -1, -1};
const std::vector<int> dy = {1, 0, -1, 0, 1, -1, 1, -1};

template<typename T>
struct Edge{
  int from, to, id;
  T cost;
  Edge(int from, int to, int id, T cost): from(from), to(to), id(id), cost(cost){}
};

template<typename T>
class WeightedGraph{
  public:
    WeightedGraph(int N): N(N), G(N){}
    void add_edge(int u, int v, int id, T cost, int zero_indexed = 0, int directed = 0){
      if (!zero_indexed) {u--; v--;}
      G[u].emplace_back(u, v, id, cost);
      if(!directed)G[v].emplace_back(v, u, id, cost);
    }
    int size()const{return G.size();};
    const std::vector<Edge<T>>& operator[](int i)const{return G[i];};
  private:
    int N;
    std::vector<std::vector<Edge<T>>> G;
};

class UnweightedGraph{
  public:
    UnweightedGraph(int N): N(N), G(N){}
    void read_edge(int zero_indexed = 0, int directed = 0){
      int u, v; std::cin >> u >> v; 
      add_edge(u, v, zero_indexed, directed);
    }
    void add_edge(int u, int v, int zero_indexed = 0, int directed = 0){
      if (!zero_indexed) {u--; v--;}
      G[u].push_back(v);
      if(!directed)G[v].push_back(u);
    }
    int size()const{return G.size();};
    const std::vector<int>& operator[](int i)const{return G[i];};
  private:
    int N;
    std::vector<std::vector<int>> G;
};

string dfs(UnweightedGraph &G, int n, int p){
  string res = "methane";
  string tmp = "";
  for(int nxt : G[n]){
    if (nxt == p) continue;
    string branch = dfs(G, nxt, n);
    for(int _ = 0; _ < 3; _++) branch.pop_back();
    tmp += "(" + branch +  "yl)";
  }
  return tmp + res;
}

int main(){
  int N; cin >> N;
  UnweightedGraph G(N);
  for(int i = 0; i < N; i++){
    for(int j = 0; j < 4; j++){
      string c; cin >> c;
      if (c != "H"){
        int v = stoi(c) - 1;
        G.add_edge(i, v, 1, 1);
      }
    }
  }
  //cout << dfs(G, 0, -1) << endl;
  return 0;
}