// includes {{{
#include<iostream>
#include<iomanip>
#include<algorithm>
#include<vector>
#include<stack>
#include<queue>
#include<map>
#include<set>
#include<tuple>
#include<cmath>
#include<random>
#include<cassert>
#include<bitset>
#include<cstdlib>
// #include<deque>
// #include<multiset>
// #include<cstring>
// #include<bits/stdc++.h>
// }}}
using namespace std;
using ll = long long;

int f[100][100];

#define POS(x) cout<<((x)?"POSSIBLE":"IMPOSSIBLE")<<endl;
#define Pos(x) cout<<((x)?"Possible":"Impossible")<<endl;
#define YES(x) cout<<((x)?"YES":"NO")<<endl;
#define Yes(x) cout<<((x)?"Yes":"No")<<endl;
#define yes(x) cout<<((x)?"yes":"no")<<endl;


int main() {
  std::ios::sync_with_stdio(false), std::cin.tie(0);
  int n;
  cin >> n;

  f[2][8] = 1;
  f[3][9] = 2;
  f[7][9] = 3;
  
  for(int i = 0; i < n; i++) {
    int x,y,z,w;
    cin >> x >> y >> z >> w;
    f[z][w] = f[x][y];
    f[x][y] = 0;
  }

  YES(1 == f[5][8] and 2 == f[4][8] and 3 == f[6][8]);

  return 0;
}