#include <bits/stdc++.h>
#define int long long
#define double long double
using namespace std;
const int MOD = 1000000007;
const int INF = 1e14;
using Graph = vector<vector<int>>;

signed main(){
  int N;
  cin >> N;
  vector<string> board(9);
  for( int i = 0; i < 9; i++ ) board[i] = ".........";
  board[1][7] = 'A';
  board[2][8] = 'B';
  board[6][8] = 'C';
  for( int i = 0; i < N; i++ ){
    int a, b, c, d;
    cin >> a >> b >> c >> d;
    a--; b--; c--; d--;
    swap(board[a][b], board[c][d]);
  }
  if( board[4][7] =='A' && board[3][7] == 'B' && board[5][7] == 'C' ) cout << "YES" << endl;
  else cout << "NO" << endl;
}