using System;

public class Program

{

    public static void Main()

    {

        var start=char.Parse(Console.ReadLine());

        var end=char.Parse(Console.ReadLine());

        var nof=char.Parse(Console.ReadLine());

        int br=0;

        for(char ch1=start;ch1<=end;ch1++)

        {

            //if(ch1==nof) ch1++;

            for(char ch2=start;ch2<=end;ch2++)

        {

            //if(ch2==nof) ch2++;

                for(char ch3=start;ch3<=end;ch3++)

            {

                if(ch1!=nof&&ch2!=nof&&ch3!=nof) //ch3++;

                {Console.Write("{0}{1}{2} ",ch1,ch2,ch3);

                 br++;}

            }

        }

        }

        Console.Write(br);

    }

}