/*
 * 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 codejam2
{

    void kick() throws IOException

    {
        FileReader fr=new FileReader("input.in");
        BufferedReader br=new BufferedReader(fr);

        FileWriter fw=new FileWriter("output.in");
        BufferedWriter bw=new BufferedWriter(fw);
        PrintWriter pw=new PrintWriter(bw);

        String txt="";
        int tc=Integer.parseInt(br.readLine());
        int c=0;
        

        while((txt=br.readLine())!=null)
        {

            StringTokenizer st=new StringTokenizer(txt);
            int a=Integer.parseInt(st.nextToken());
            int b=Integer.parseInt(st.nextToken());
            int posi=0;

            for(int i=a; i<b; i++)
            {
                for(int j=i+1; j<=b; j++)
                {
                    String a1=Integer.toString(i);
                    String b1=Integer.toString(j);

                    if(pos(a1,b1))
                       { posi++;}

                }
            }
            
            c++;
            pw.println("Case #"+c+": "+posi);

        }
        
        

        pw.close();
        bw.close();
        fw.close();

        br.close();
        fr.close();
    }

    boolean pos(String s,String p)
    {

        p=p+p;

        for(int j=0; j<s.length(); j++)
        {
            String subs=p.substring(j,j+(s.length()));
            if(s.equalsIgnoreCase(subs))
            {
                return true;
            }
        }
        return false;
    }
}