LettersCombination

import java.util.Scanner;

public class LettersCombination {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        char letter1 = scanner.next().charAt(0);
        char letter2 = scanner.next().charAt(0);
        char letter3 = scanner.next().charAt(0);


        int suma = 0;

        for (char i = letter1; i <= letter2; i++)
        {
            for (char j = letter1; j <= letter2; j++)
            {
                for (char k = letter1; k <= letter2; k++)
                {
                    if (i != letter3 && j != letter3 && k != letter3)
                    {
                        System.out.printf("%c%c%c ",i,j,k);
                        suma++;
                    }
                }
            }
        }

        System.out.println(suma);
    }
}