N = int(input())
t = []
for n in range(N):
    i = [ int(g) for g in input().split()]
    j = (i[0], i[1])
    k = (i[2], i[3])
    hand = [j, k]
    t.append(hand)

ban = {"a":(2, 8), "b":(3, 9), "c":(7,9)}
for x in t:
    if x[0] == ban["a"] :
        ban['a'] = x[1]
    elif x[0] == ban["b"] :
        ban["b"] = x[1]
    elif x[0] == ban["c"] :
        ban['c'] =x[1]

if ban == {"a":(5, 8), "b":(4, 8), "c":(6,8)}:
    print("YES")
else:
    print("NO")