N = int(input())
op = [map(int, input().split()) for _ in range(N)]

A = [2, 8]
B = [3, 9]
C = [7, 9]
for x1, y1, x2, y2 in op:
    if [x1, y1] == A:
        A = [x2, y2]
    elif [x1, y1] == B:
        B = [x2, y2]
    elif [x1, y1] == C:
        C = [x2, y2]

if (A == [5, 8] and
    B == [4, 8] and
    C == [6, 8]):
    print("YES")
else:
    print("NO")