#define _USE_MATH_DEFINES
#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define MT make_tuple
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
#define RT return
using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;
using vll = vector<ll>;

pii pos[10][10];
int FROM[6] = { 2,8 ,3,9,7,9 };
int TO[6] = { 5,8,4,8,6,8 };

void solve() {
    rep(i, 10)rep(j, 10)pos[i][j] = mp(i, j);

    int N;
    cin >> N;
    rep(i, N) {
        int x, y, X, Y;
        cin >> x >> y >> X >> Y;
        pos[X][Y] = pos[x][y];
        pos[x][y] = mp(-1, -1);
    }

    rep(i, 3) {
        if (pos[TO[i * 2]][TO[i * 2 + 1]] != mp(FROM[i * 2], FROM[i * 2 + 1])) {
            cout << "NO" << endl;
            return;
        }
    }
    cout << "YES" << endl;
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout << fixed << setprecision(15);
	solve();
	return 0;
}