#include <bits/stdc++.h>
using namespace std;

bool mentsu(vector<int> hand, int remaining) {
    if (remaining == 0) return true;
    for (int i = 0; i < 9; i++) {
        if (hand.at(i) < 3) continue;
        hand.at(i) -= 3;
        if (mentsu(hand, remaining - 1)) return true;
        hand.at(i) += 3;
    }
    for (int i = 0; i < 7; i++) {
        if (hand.at(i) == 0 || hand.at(i + 1) == 0 || hand.at(i + 2) == 0) continue;
        hand.at(i)--; hand.at(i + 1)--; hand.at(i + 2)--;
        if (mentsu(hand, remaining - 1)) return true;
        hand.at(i)++; hand.at(i + 1)++; hand.at(i + 2)++;
    }
    return false;
}

bool isagari(vector<int> hand) {
    bool seven_pairs = true;
    for (int i = 0; i < 9; i++) {
        if (hand.at(i) != 0 && hand.at(i) != 2) {
            seven_pairs = false;
            break;
        }
    }
    if (seven_pairs) return true;
    for (int i = 0; i < 9; i++) {
        if (hand.at(i) < 2) continue;
        hand.at(i) -= 2;
        if (mentsu(hand, 4)) return true;
        hand.at(i) += 2;
    }
    return false;
}

int main()
{
    string s;
    cin >> s;
    sort(s.begin(), s.end());
    vector<int> hand(9);
    for (int i = 0; i < 13; i++) hand.at(s.at(i) - '1')++;
    for (int i = 0; i < 9; i++) {
        if (hand.at(i) == 4) continue;
        hand.at(i)++;
        if (isagari(hand)) cout << i + 1 << endl;
        hand.at(i)--;
    }
}