import java.util.Scanner;


public class LettersCombinations {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);


        char fromSymbol = scanner.nextLine().charAt(0);
        char toSymbol = scanner.nextLine().charAt(0);
        char toIgnore = scanner.nextLine().charAt(0);

        int counter = 0;

        for (int i = fromSymbol; i < toSymbol; i++){
            for (int j = fromSymbol; j < toSymbol; j++){
                for (int k = fromSymbol; k < toSymbol; k++){
                    if (k != toIgnore && i != toIgnore && j != toIgnore){
                        System.out.print("" + i + j + k + " ");
                        counter++;
                    }
                }
            }
        }

        System.out.println(counter);
    }
}