N = int(input())

koma = [[2,8],[3,9],[7,9]]
muteki = [[5,8],[4,8],[6,8]]

for i in range(N):
    x1,y1,x2,y2 = map(int,input().split())

    if [x1,y1] in koma:
        idx = koma.index([x1,y1])
        koma[idx] = [x2,y2]

for k,m in zip(koma,muteki):
    if k != m:
        print("NO")
        break
else:
    print("YES")