#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>
#include <queue>
#include <string>
#include <map>
#include <set>
#include <stack>
#include <tuple>
#include <deque>
#include <array>
#include <numeric>
#include <bitset>
#include <iomanip>
#include <cassert>
#include <chrono>
#include <random>
#include <limits>
#include <iterator>
#include <functional>
#include <sstream>
#include <fstream>
#include <complex>
#include <cstring>
#include <unordered_map>
#include <unordered_set>
using namespace std;

using ll = long long;
using P = pair<int, int>;
constexpr int INF = 1001001001;
constexpr int mod = 1000000007;
// constexpr int mod = 998244353;

template<class T>
inline bool chmax(T& x, T y){
    if(x < y){
        x = y;
        return true;
    }
    return false;
}
template<class T>
inline bool chmin(T& x, T y){
    if(x > y){
        x = y;
        return true;
    }
    return false;
}

int cnt[10];

bool won(int num){
    if(cnt[num] == 4)   return false;

    bool res = false;
    cnt[num] += 1;
    for(int i = 1; i <= 9; ++i){
        if(cnt[i] < 2)  continue;
        vector<int> cnt2(10);
        for(int j = 1; j <= 9; ++j) cnt2[j] = cnt[j];
        cnt2[i] -= 2;
        int three_pair = 0;
        for(int j = 1; j <= 9; ++j){
            if(cnt2[j] >= 3){
                three_pair += 1;
                cnt2[j] -= 3;
            }
            if(j + 2 <= 9){
                bool update = true;
                while(update && cnt2[j] > 0){
                    update = false;
                    if(cnt2[j] > 0 && cnt2[j + 1] > 0 && cnt2[j + 2] > 0){
                        three_pair += 1;
                        cnt2[j] -= 1;
                        cnt2[j + 1] -= 1;
                        cnt2[j + 2] -= 1;
                        update = true;
                    }
                }
            }
        }
        res |= three_pair == 4;
    }
    cnt[num] -= 1;

    return res;
}

bool seven(int num){
    if(cnt[num] == 4)   return false;

    cnt[num] += 1;
    int two_pair = 0;
    for(int i = 1; i <= 9; ++i){
        if(cnt[i] == 2) two_pair += 1;
    }
    cnt[num] -= 1;

    return two_pair == 7;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    for(int i = 0; i < 13; ++i){
        char ch;
        cin >> ch;
        cnt[ch - '0'] += 1;
    }
    for(int i = 1; i <= 9; ++i){
        if(won(i) || seven(i))  cout << i << '\n';
    }

    return 0;
}