#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
typedef long long ll;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);

    pair<int,int> A = {2, 8}, B = {3, 9}, C = {7, 9};
    int N; cin >> N;
    rep(_,N) {
        pair<int,int> S, T;
        cin >> S.first >> S.second >> T.first >> T.second;
        if(A == S) A = T;
        if(B == S) B = T;
        if(C == S) C = T;
    }

    cout << (A == make_pair(5, 8) && B == make_pair(4, 8) && C == make_pair(6, 8) ? "YES" : "NO") << endl;
}