#include <iostream>
#include <utility>
#include <string>
using namespace std;
using Pos = pair<int,int>;
int main(){
    int N; cin>>N;
    Pos X[3] = {{2,8},{3,9},{7,9}};
    while(N--){
        int a,b,c,d; cin>>a>>b>>c>>d;
        for(int t=0; t<3; t++) if(X[t] == make_pair(a,b)) X[t] = make_pair(c,d);
    }
    string ans = "YES";
    Pos Y[3] = {{5,8},{4,8},{6,8}};
    for(int t=0; t<3; t++) if(X[t] != Y[t]) ans = "NO";
    cout << ans << "\n";
}