#include <bits/stdc++.h>
#define rep(i,n)for(long long i=0;i<(n);i++)
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
const ll INF=1e18;
const int MOD=1e9+7;
const double pi=acos(-1);

int main(){
  int n;
  cin >> n;
  int f[10][10]={};
  f[2][8]=1;
  f[3][9]=2;
  f[7][9]=3;
  rep(i,n){
    int a,b,c,d;
    cin >> a >> b >> c >> d;
    f[c][d]=f[a][b];
    f[a][b]=0;
  }
  if(f[5][8]==1 && f[4][8]==2 && f[6][8]==3)cout<<"YES"<<endl;
  else cout<<"NO"<<endl;
  
}