using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var n = NN;
        var map = NArr(n);
        var ban = new int[10, 10];
        ban[2, 8] = 1;
        ban[3, 9] = 2;
        ban[7, 9] = 3;
        foreach (var move in map)
        {
            (ban[move[0], move[1]], ban[move[2], move[3]]) = (ban[move[2], move[3]], ban[move[0], move[1]]);
        }
        WriteLine(ban[5, 8] == 1 && ban[4, 8] == 2 && ban[6, 8] == 3 ? "YES" : "NO");
    }
}