//Normal

#define _GLIBCXX_DEBUG
#define ll long long
#include <bits/stdc++.h>
using namespace std;
using Graph = vector<vector<int>>;

void print(auto a){
  cout << a;
}

void prints(auto a){
  cout << a << " ";
}

void prints(){
  cout << " ";
}

void printl(auto a){
  cout << a << endl;
}

void printl(){
  cout << endl;
}

void fix(int n){
  cout << fixed << setprecision(n);
}

int main(){
  int N; cin >> N;
  vector<vector<char>> X(10, vector<char>(10, '-'));
  X[2][8] = 'A';
  X[3][9] = 'B';
  X[7][9] = 'C';
  
  for(int i = 0; i < N; i++){
    int X1, Y1, X2, Y2; cin >> X1 >> Y1 >> X2 >> Y2;
    
    swap(X[X1][Y1], X[X2][Y2]);
  }
  
  X[5][8] == 'A' and X[4][8] == 'B' and X[6][8] == 'C' ? 
     printl("YES") : printl("NO");
  
  return 0;
}