# yukicoder No.24 数当てゲーム

N = int(input())
exist = {str(i) for i in range(10)}

for _ in range(N):
    A, B, C, D, R = input().split()

    if R == "YES":
        exist = exist & {A, B, C, D}
    else:
        exist = exist - {A, B, C, D}

print(*exist)