雀魂启动！

    head = 10
    for key in hashset:
        if hashset[key] > 0:
            if key < head:
                head = key
    if head == 10:
        return True

    if hashset[head] >= 3:
        hashset[head] -= 3
        return ishu(hashset)
    if hashset[head+1] >0 and hashset[head+2] >0 and hashset[head] >0:
        hashset[head] -= 1
        hashset[head+1] -= 1
        hashset[head+2] -= 1
        return ishu(hashset)
    return False
        
def hupai(num,n):
    from collections import Counter
    num.append(n)
    num.sort()
    hashset = Counter(num)
    for l in hashset.values():
        if l > 4:
            return False
    for key in hashset:
        if hashset[key] >= 2:
            new_set = hashset.copy()
            new_set[key] -= 2
            if ishu(new_set):
                return True
    return False
        
    
inp = input().split(' ')
nums = [int(x)for x in inp]
res = []
for i in range(1,10):
    if hupai(nums.copy(),i):
        res.append(i)
if len(res) == 0:
    print(0)
else:
    for x in res:
        print(x, end=' ')

 def is_win(cards):
    if len(cards) == 2 and cards[0] == cards[1]:
        return True
    for i in range(len(cards) - 2):
        if i < len(cards)-4 and  cards[i] == cards[i + 4]:
            return False
    for i in range(len(cards) - 2):
        tmp = cards[i]
        #shunzi
        if (tmp in cards) and (tmp + 1 in cards) and (tmp + 2 in cards):
            this_cards = cards.copy()
            this_cards.remove(tmp)
            this_cards.remove(tmp + 1)
            this_cards.remove(tmp + 2)
            if is_win(this_cards):
                return True
        #kezi
        elif tmp == cards[i + 2]:
            this_cards = cards.copy()
            this_cards.remove(tmp)
            this_cards.remove(tmp)
            this_cards.remove(tmp)
            if is_win(this_cards):
                return True
    return False

def main():
    nums = list(map(int, input().split()))
    # nums = list(map(int, "1 1 1 3 4 5 5 5 5 6 7 9 9".split()))
    res = []
    for i in range(1, 10):
        cards = nums.copy()
        cards.append(i)
        cards.sort()
        if is_win(cards):
            res.append(i)

    res = ' '.join(str(x) for x in sorted(res)) if res else '0'
    print(res)

if __name__ == "__main__":
    main()