import java.util.*;
public class Generate3LeterWords {

    public static void main(String[] args){

        Scanner input = new Scanner(System.in);
        String text = input.next();
        char[] letters = text.toCharArray();
        input.close();
        for (int i = 0; i < letters.length; i++) {
            for (int j = 0; j < letters.length; j++) {
                for (int k = 0; k < letters.length; k++) {

                    String output = Character.toString(letters[i]) + Character.toString(letters[j]) + Character.toString(letters[k]);
                    System.out.print(output + " ");
                }
            }
        }
    }
}