import java.util.Scanner;

public class letterCombination181216 {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        char fromSymbol = scan.nextLine().charAt(0);
        char toSymbol = scan.nextLine().charAt(0);
        char toIgnore = scan.nextLine().charAt(0);
        int counter = 0;

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