n=int(input())
a=[i for i in range(10)]
b=[]
count=0
for i in range(n):
    x=list(input().split())
    if x[4]=="NO":
        for i in range(4):
            if int(x[i]) in a:
                a.remove(int(x[i]))
            else:
                continue
    elif x[4]=="YES" and count==0:
        b.append(int(x[0]))
        b.append(int(x[1]))
        b.append(int(x[2]))
        b.append(int(x[3]))
        count+=1
    elif x[4]=="YES" and count>=1:
        b.append(int(x[0]))
        b.append(int(x[1]))
        b.append(int(x[2]))
        b.append(int(x[3]))
        b=[x for x in set(b) if b.count(x) > 1]
if a==[]:
    print(*b)
elif b==[]:
    print(*a)
else:
    for i in list(set(a)&set(b)):
        print(i)