def inpl(): return list(map(int, input().split()))

N = int(input())
G = [[0]*10 for _ in range(10)]
G[2][8] = 1
G[3][9] = 2
G[7][9] = 3

for _ in range(N):
    px, py, qx, qy = inpl()
    G[px][py], G[qx][qy] = G[qx][qy], G[px][py]

if G[5][8] == 1 and G[4][8] == 2 and G[6][8] == 3:
    print("YES")
else:
    print("NO")