#define _USE_MATH_DEFINES
#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <complex>
#include <string>
#include <vector>
#include <array>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
#include <iterator>
#include <memory>
#include <regex>
using namespace std;

bool solve(const vector<int>& cnt, int step)
{
    if(step == 5)
        return true;

    if(step == 0){
        for(int i=0; i<9; ++i){
            if(cnt[i] < 2)
                continue;
            vector<int> cnt2 = cnt;
            cnt2[i] -= 2;
            if(solve(cnt2, 1))
                return true;
        }
        bool chitoi = true;
        for(int i=0; i<9; ++i){
            if(cnt[i] != 0 && cnt[i] != 2)
                chitoi = false;
        }
        if(chitoi)
            return true;
    }
    else{
        int i = 0;
        while(cnt[i] == 0)
            ++ i;

        if(cnt[i] >= 3){
            vector<int> cnt2 = cnt;
            cnt2[i] -= 3;
            if(solve(cnt2, step + 1))
                return true;
        }
        if(i < 7 && cnt[i+1] > 0 && cnt[i+2] > 0){
            vector<int> cnt2 = cnt;
            -- cnt2[i];
            -- cnt2[i+1];
            -- cnt2[i+2];
            if(solve(cnt2, step + 1))
                return true;
        }
    }
    return false;
}

int main()
{
    vector<int> cnt(9, 0);
    for(int i=0; i<13; ++i){
        char c;
        cin >> c;
        ++ cnt[c-'1'];
    }

    for(int i=0; i<9; ++i){
        if(cnt[i] == 4)
            continue;
        ++ cnt[i];
        if(solve(cnt, 0))
            cout << (i + 1) << endl;
        -- cnt[i];
    }

    return 0;
}