n = int(input())
E = [['N'] * 10 for i in range(10)]
E[2][8],E[3][9],E[7][9] = 'A','B','C'
for _ in range(n):
    a,b,c,d = map(int,input().split())
    E[c][d] = E[a][b]
    E[a][b] = 'N'
if E[5][8] == 'A' and E[4][8] == 'B' and E[6][8] == 'C':
    print('YES')
else:
    print('NO')