#include <bits/stdc++.h>
#include<iostream>
#include<map>
#include<vector>
#include <algorithm>
#include<math.h>
#include <iomanip>
#include<set>
#include <numeric>
#include<string>
using ll = long long;
using namespace std;

int main()
{
    string n, s = "";
    int max1 = 0;
    cin >> n;
    vector<int> v(8, 0), ans;
    for (int i = 0; i < n.size(); i++){
        if (n[i] == 'A') s += "1010";
        else if (n[i] == 'B') s += "1011";
        else if (n[i] == 'C') s += "1100";
        else if (n[i] == 'D') s += "1101";
        else if (n[i] == 'E') s += "1110";
        else s += "1111";
    }
    while (s.size()>=3){
        string t;
        t = s.substr(s.size()-3, 3);
        if (t == "000") v[0]++;
        else if (t == "001") v[1]++;
        else if (t == "010") v[2]++;
        else if (t == "011") v[3]++;
        else if (t == "100") v[4]++;
        else if (t == "101") v[5]++;
        else if (t == "110") v[6]++;
        else v[7]++;
        s.erase(s.size()-3, 3);
    }
    if (s == "1") v[1]++;
    else if (s == "10") v[2]++;
    else if (s == "11") v[3]++;
    for (int i = 0; i < 8; i++){
        if (v[i] > max1){
            max1 = v[i];
            ans.clear();
            ans.push_back(i);
        } else if (v[i] == max1) ans.push_back(i);

    }
    string delim = "";
    for (auto x : ans){
        cout << delim << x;
        delim = " ";
    }
    cout << endl;
}