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

#ifdef DEBUG_
#include <compe/debug.hpp>
#else
#define dump(...)
#endif

#define FastIO cin.tie(nullptr), ios_base::sync_with_stdio(false);
#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
#define out(msg) cout << (msg) << '\n'
#define die(msg)         \
  do {                   \
    cout << msg << endl; \
    exit(0);             \
  } while (0)
#define all(k) k.begin(), k.end()
#define rall(k) k.rbegin(), k.rend()
#define INFi 1 << 30
#define INFll 1LL << 60

template <typename T> bool chmax(T& a, const T& b) {
  return ((a < b) ? (a = b, true) : (false));
}
template <typename T> bool chmin(T& a, const T& b) {
  return ((a > b) ? (a = b, true) : false);
}

using llint = long long int;

int main() {
  FastIO;
  int n;
  cin >> n;

  vector<vector<char>> grid(10, vector<char>(10, '.'));
  grid[2][8] = 'A';
  grid[3][9] = 'B';
  grid[7][9] = 'C';

  rep(_, n) {
    int x1, y1, x2, y2;
    cin >> x1 >> y1 >> x2 >> y2;
    swap(grid[x1][y1], grid[x2][y2]);
  }

  if (grid[5][8] == 'A' && grid[4][8] == 'B' && grid[6][8] == 'C')
    out("YES");
  else
    out("NO");
}