def main():
    N = int(input())
    x = [(2, 8), (3, 9), (7, 9)]
    for i in range(N):
        a, b, c, d = map(int, input().split())
        x = [(c, d) if z == a and b == w else (z, w) for z, w in x]
    print('YES' if x == [(5, 8), (4, 8), (6, 8)] else 'NO')


if __name__ == '__main__':
    main()