//Stephen Siena
//CSE 40872 - Problem 4
//September 4, 2009

#include <cstdlib>
#include <iostream>
#include <vector>
#include <iterator>
#include <string>

using namespace std;

void find_digits(vector<int> &entries, vector<int> &digits);
void make_sets(vector<int> &entries, vector<int> &digits, vector<vector<int> > &sets);
void crack_code(vector<int> &digits, vector<vector<int> > &sets);

int main(){

  int passcode;

  vector<int> entries;
  vector<int> digits;
  vector<vector<int> > sets;

  while(true){
    cin >> passcode;
    //entries.push_back(passcode);
    if (cin.eof()) break;
    entries.push_back(passcode);
  }

  find_digits(entries, digits);

  make_sets(entries, digits, sets);

  crack_code(digits, sets);

  cout << endl;

  return 0;
}

void find_digits(vector<int> &entries, vector<int> &digits){
  int values[10] = {0};
  vector<int>::iterator i;

  for (i = entries.begin(); i != entries.end(); ++i){
    values[(*i)%10]++;
    values[((*i)%100)/10]++;
    values[(*i)/100]++;
  }

  for (int j = 0; j < 10; j++){
    if (values[j] != 0){
      digits.push_back(j);
    }
  }

}

		 
void make_sets(vector<int> &entries, vector<int> &digits, vector<vector<int> > &sets){

  sets.resize(10);
  for (int i = 0; i < 10; i++){
    sets[i].resize(10);
  }

  vector<int>::iterator it;

  for (int i = 0; i < (int)digits.size(); i++){
    for (it = entries.begin(); it != entries.end(); ++it){
      if ( (*it)%10 == digits[i]){
	sets[digits[i]][((*it)%100)/10]++;
	sets[digits[i]][(*it)/100]++;
      }
      else if ( ((*it)%100)/10  == digits[i]){
	sets[digits[i]][(*it)/100]++;
      }
    }
  }

  
  /*
  for (int i = 0; i < 10; i++){
    for (int j = 0; j < 10; j++){
      cout << sets[i][j] << " ";
    }
    cout << endl;
  }
  */
}

void crack_code(vector<int> &digits, vector<vector<int> > &sets){

  int rowSum = 0;
  int i, j, k;
  int digitsUsed[10] = {0};
  vector<int>::iterator it;

  for (i = 0; i < (int)digits.size(); i++){
    for (it = digits.begin(); it != digits.end(); ++it){
      for (j = 0; j < 10; j++){
	rowSum += sets[*it][j];
      }
      if (rowSum == 0){
	if (digitsUsed[*it] == 0){
	  digitsUsed[*it]++;
	  cout << *it;      
	}
	for (k = 0; k < 10; k++){
	  sets[*it][k] = 1;
	  sets[k][*it] = 0;
	}
      }
      rowSum = 0;
    }
  }
}