S = input()
l = "ABCDEF"
dic = {x:i for i,x in enumerate(l,10)}
num = 0
for s in S:
    num *= 16
    num += dic[s]

count = [0]*10
while num:
    count[num%8] += 1
    num //= 8

m = max(count)
ans = []
for i in range(10):
    if count[i] == m:
        ans.append(i)
print(*ans)