n=int(input())
xy=[[2,8],[3,9],[7,9]]
for _ in range(n):
    x1,y1,x2,y2=map(int,input().split())
    for i in range(3):
        if xy[i][0]==x1 and xy[i][1]==y1:
            xy[i][0]=x2
            xy[i][1]=y2

if xy[0]==[5,8] and xy[1]==[4,8] and xy[2]==[6,8]:
    print("YES")
else:
    print("NO")