#include <bits/stdc++.h>
#define rep(i, ss, ee) for (int i = ss; i < ee; ++i)
using namespace std;
using P = pair<int, int>;

//(2,8),(3,9),(7,9)
//(5,8),(4,8),(6,8)
void solve() {
  int N;
  cin >> N;
  vector<P> s{{2, 8}, {3, 9}, {7, 9}};
  vector<P> e{{5, 8}, {4, 8}, {6, 8}};
  P p, q;
  rep(i, 0, N) {
    cin >> p.first >> p.second >> q.first >> q.second;
    rep(j, 0, 3) {
      if (s[j] == p) s[j] = q;
    }
  }
  cout << ((s[0] == e[0] && s[1] == e[1] && s[2] == e[2]) ? "YES" : "NO")
       << endl;
}

int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  solve();
  getchar();
}