/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.io.File;
import java.io.FileInputStream;
import java.util.Scanner;

/**
 *
 * @author imgps
 */
public class C {
    public static void main(String args[]) throws Exception{
        int A,B;
        int ctr = 0;
        int testCases;
        
        Scanner sc = new Scanner(new FileInputStream("C-small-attempt0.in "));
        testCases = sc.nextInt();
        int input[][] = new int[testCases][2];
        for(int i=0;i<testCases;i++)
        {
          //  System.out.print("Enter input A B: ");
            input[i][0] = sc.nextInt();
            input[i][1] = sc.nextInt();
            
        }
  

for(int k=0;k<testCases;k++){
      ctr = 0;
      A = input[k][0];
      B = input[k][1];
        for(int i = A;i<=B;i++){
            int num = i;
            int nMul = 1;
            int mul = 1; 
            int tnum = num/10;
            while(tnum > 0){
                mul = mul *10;
                tnum= tnum/10;
            }
            tnum = num;
            int n = 0;
            while(tnum > 0 && mul >= 10){
                nMul = nMul * 10;
                n = (num % nMul) * mul + (num / nMul);
                mul = mul / 10;
                tnum = tnum / 10;
                for(int m=num;m<=B;m++){
                    
                    if(n == m && m > num){
                        ctr++;
                    }
                }
                
                
                
         
            }
        }
        System.out.println("Case #"+(k+1)+": "+ctr);
        
    }
    }
}

import java.io.*;import java.util.*;
public class Solution3
{
	public static void main(String args[]) throws IOException
	{
		BufferedReader br=new BufferedReader(new FileReader("input.txt"));
	    PrintWriter pw=new PrintWriter(new BufferedWriter(new FileWriter("output.txt")));
	    int lines=Integer.parseInt(br.readLine());
	    for(int q=1;q<=lines;q++)
	    {
	    	StringTokenizer st=new StringTokenizer(br.readLine());
	    	int A=Integer.parseInt(st.nextToken());
		    int B=Integer.parseInt(st.nextToken());
		    int ctr=0;
		    for(int n=A;n<=B;n++)
		    {
		    	for(int m=n+1;m<=B;m++)
		    	{
		    			String s1=String.valueOf(n);
			    		String s2=String.valueOf(m);
			    		int x1,x2,i;
			    		for(i=0;i<s1.length();i++)
			    		{
			    			if(s1.charAt(0)==s2.charAt(i))
			    			{
			    			String chk1=s1.substring(0,s2.length()-i);
				    		String chk2=s1.substring(s2.length()-i);
				    		String chk3=s2.substring(0,i);
				    		String chk4=s2.substring(i);
				    		if(chk1.equals(chk4)&&chk2.equals(chk3))
				    		  { ctr++;}
			    			}
			    		}        
		        }    
		    }
		    pw.println("Case #"+q+": "+ctr);
	    }
	    pw.close();
	    
	    
    }
    
}