import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

package Qualification_Round_2012;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.StringTokenizer;

public class C {

    public static void main(String[] args) throws FileNotFoundException, IOException {
        BufferedReader in = new BufferedReader(new FileReader("C-large.in"));
        PrintWriter out = new PrintWriter("c.out");
        StringTokenizer k;
        int t,a,b,x,y,count;
        HashSet<Integer> h;
        String s;
        int ar [] = new int[7];
        ar[0]=1;
        ar[1]=10;
        ar[2]=100;
        ar[3]=1000;
        ar[4]=10000;
        ar[5]=100000;
        ar[6]=1000000;
        t=Integer.parseInt(in.readLine().trim());
        for (int i = 1; i <= t; i++) {
            count=0;
            k=new StringTokenizer(in.readLine());
            a=Integer.parseInt(k.nextToken());
            b=Integer.parseInt(k.nextToken());
            for (int j = a; j <= b; j++) {
                h=new HashSet<Integer>(6);
                x=j;
                s=j+"";
                for (int l = 0; l < s.length()-1; l++) {
                    y=x%10;
                    y*=ar[s.length()-1];
                    y+=x/10;
                    if(y>j && y<=b && y!=x){
                        if(h.add(y))
                            count++;
                    }
                    x=y;
                }
            }
            out.append("Case #"+i+": "+count+"\n");
        }
        out.close();
    }
}
