n = int(input())
r = [(2,8),(3,9),(7,9)]
for _ in range(n):
    a,b,c,d = map(int,input().split())
    if (a,b) in r:
        i = r.index((a,b))
        r[i] = (c,d)
print("YES" if r == [(5,8),(4,8),(6,8)] else "NO")