#include <bits/stdc++.h>

using namespace std;

int main() {
    int N;
    cin >> N;

    char g[9][9];
    for (int i = 0; i < 9; ++i) {
        for (int j = 0; j < 9; ++j) {
            g[i][j] = 'Z';
        }
    }

    g[1][7] = 'A';
    g[2][8] = 'B';
    g[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(g[a][b], g[c][d]);
    }
    if (g[4][7] == 'A' && g[3][7] == 'B' && g[5][7] == 'C') {
        cout << "YES" << endl;
    } else {
        cout << "NO" << endl;
    }
    return 0;
}