n=int(input())
s=[2,8,3,9,7,9]
for i in range(n):
    a,b,c,d=map(int,input().split())
    if s[0]==a and s[1]==b:
        s[0]=c
        s[1]=d
    elif s[2]==a and s[3]==b:
        s[2]==c
        s[3]==d
    elif s[4]==a and s[5]==b:
        s[4]==c
        s[5]==d
if s is [5,8,4,8,6,8]:
    print("YES")
else:
    print("NO")