#include <bits/stdc++.h>
using namespace std;

int main() {
  int N;
  cin >> N;
  int x1 = 2, y1 = 8, x2 = 3, y2 = 9, x3 = 7, y3 = 9;
  for (int i = 0; i < N; i++) {
    int a, b, c, d;
    cin >> a >> b >> c >> d;
    if (a == x1 && b == y1) x1 = c, y1 = d;
    else if (a == x2 && b == y2) x2 = c, y2 = d;
    else if (a == x3 && b == y3) x3 = c, y3 = d;
  }
  cout << ((x1 == 5 && y1 == 8 && x2 == 4 && y2 == 8 && x3 == 6 && y3 == 8) ? "YES" : "NO") << "\n";
}