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

int main() {
	const int n = 10;
	int a[n][n] = {};
	a[2][8] = 1;
	a[3][9] = 2;
	a[7][9] = 3;
	int q; cin >> q;
	while(q--) {
		int sx, sy; cin >> sx >> sy;
		int x, y; cin >> x >> y;
		swap(a[sx][sy], a[x][y]);
	}
	if(a[5][8] == 1 and a[4][8] == 2 and a[6][8] == 3) {
		cout << "YES" << '\n';
	} else {
		cout << "NO" << '\n';
	}
	return 0;
}