import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

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

package actual;

import codejam.*;
import java.io.*;
import java.util.Scanner;
/**
 *
 * @author atm
 */
public class PC {
   public static void main(String[] args) throws Exception {
       int Cases;
       int L,U;
       String words[];
       
        FileInputStream fstreamIN = new FileInputStream("F:\\codejam\\input\\C-small-attempt0.in");
        FileOutputStream fstreamOUT = new FileOutputStream("F:\\codejam\\output\\C-small-attempt0.out");
        
        Scanner in=new Scanner(fstreamIN);
        PrintWriter out=new PrintWriter(fstreamOUT);
        
        Cases=in.nextInt();
        
        for(int i=0;i<Cases;i++) // Cases loop
        {
            L=in.nextInt();
            U=in.nextInt();
            int ans=0;
            if(L==1000){
                ans=0;
            }else if(L<10){
                ans=0;
            }else if(L<100){
                
                for(int j=L;j<=U;j++){ 
                    if(revtwo(j)<=U){
                        if(revtwo(j)>j)
                            ans++;                        
                    }
                }
            } else {
                for(int j=L;j<=U;j++){ 
                    if(onedigcir(j)<=U){
                        if(onedigcir(j)>j)
                            ans++;                        
                    }
                    if(twodigcir(j)<=U){
                        if(twodigcir(j)>j)
                            if(onedigcir(j)!=twodigcir(j))
                                ans++;                        
                    }
                    
                }               
            } 
             out.printf("Case #%d: %d\n",i+1,ans);
        }
        out.close();
   }
   static int revtwo(int num){
       return (num%10)*10+(num/10);
   }
   static int onedigcir(int num)
   {
       int newnum;
       newnum=(num%10)*100+(num/10);
       return newnum;
   }
   static int twodigcir(int num)
   {
       int newnum;
       newnum=(num%100)*10+(num/100);
       
       return newnum;
   }
}
