#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;

string N, B, O;
map<char, string> mp1 = {{'A', "1010"}, {'B', "1011"}, {'C', "1100"}, {'D', "1101"}, {'E', "1110"}, {'F', "1111"}};
map<string, char> mp2 = {{"000", '0'}, {"001", '1'}, {"010", '2'}, {"011", '3'}, {"100", '4'}, 
                        {"101", '5'}, {"110", '6'}, {"111", '7'}};
int cnt[8];

int main() {
  cin >> N;
  for (int i = 0; i < N.size(); i++) {
    B += mp1[N[i]];
  }
  int tail = B.size(), pos = 0;
  for (int i = B.size() - 1; i >= 0; i--) {
    pos++;
    if (i == 0 || pos % 3 == 0) {
      string B1 = "00" + B.substr(i, tail - i);
      O += mp2[B1.substr(B1.size() - 3)];
      tail = i;
    }
  }
  reverse(O.begin(), O.end());
  for (int i = 0; i < O.size(); i++) {
    cnt[O[i] - '0']++;
  }
  int maxe = *max_element(cnt, cnt + 8);
  vector<int> ans;
  for (int i = 0; i < 8; i++) {
    if (cnt[i] == maxe) ans.push_back(i);
  }
  for (int i = 0; i < ans.size(); i++) cout << ans[i] << " \n"[i == ans.size() - 1];
  return 0;
}