using System;
using System.Linq;
using System.Collections.Generic;


static class NagataKanaIsAGenius {
    public static void Main() {
        int[,]ckd=new int[11,11];
        ckd[2,8]=1;
        ckd[3,9]=2;
        ckd[7,9]=3;
        int n=int.Parse(Console.ReadLine());
        for(int i=0;i<n;i++){
            int[]a=Console.ReadLine().Split().Select(int.Parse).ToArray();
            int x=ckd[a[0],a[1]];
            ckd[a[0],a[1]]=0;
            ckd[a[2],a[3]]=x;
        }
        Console.WriteLine(ckd[5,8]==1&&ckd[4,8]==2&&ckd[6,8]==3?"YES":"NO");
    }
}