#include <iostream>
using namespace std;
#define rep(i,n) for(int i=0,_i=(n);i<_i;++i)

bool is_chitoi(int count[9]) {
  rep(i, 9)
    if (count[i] != 0 && count[i] != 2)
      return false;
  return true;
}
bool is_tenpai(int count[9], bool head = false, int mentsu = 0) {
  if (head && mentsu == 4)
    return true;
  if (!head && mentsu == 0 && is_chitoi(count))
    return true;
  bool ok = false;
  rep(i, 9) {
    if (count[i] >= 2 && !head) {
      count[i] -= 2;
      if (is_tenpai(count, true, mentsu))
        ok = true;
      count[i] += 2;
    }
    if (count[i] >= 3) {
      count[i] -= 3;
      if (is_tenpai(count, head, mentsu+1))
        ok = true;
      count[i] += 3;
    }
    if (i+2 < 9 && count[i] > 0 && count[i+1] > 0 && count[i+2] > 0) {
      --count[i]; --count[i+1]; --count[i+2];
      if (is_tenpai(count, head, mentsu+1))
        ok = true;
      ++count[i]; ++count[i+1]; ++count[i+2];
    }
    if (ok)
      return true;
  }
  return false;
}
int main() {
  string S; cin >> S;

  int count[9];
  rep(i, 9) count[i] = 0;
  rep(i, 13) {
    ++count[S[i] - '0' - 1];
  }

  rep(i, 9) {
    if (count[i] == 4)
      continue;
    ++count[i];
    if (is_tenpai(count)) {
      cout << i+1 << endl;
    }
    --count[i];
  }

  return 0;
}