#include <iostream>
#include <cmath>
#include <algorithm>
#include <math.h>
#include <vector>
#include <fstream>

using namespace std;

int main()
{
    const int N = 4;
    int coins[N] = {1, 2, 3, 4};
    for (int i = 0; i < 3; i++) {
        for (int j = i+1; j < 3; j++) {
            for (int l = j+1; l < 3; l++) {
                for (int h = l+1; h < 3; h++) {
                    cout << coins[i] << coins[j] << coins[l];
                    cout << endl;
                }

            }
        }
    }



    return 0;
}