/*
 * 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.math.BigInteger;
import java.util.*;

public class GC {
	String s  = null;
	String[] sp = null;
	
	
	
	public void run() throws Exception{
		
		BufferedReader br = new BufferedReader(new FileReader("C-small-attempt0.in"));
		
		BufferedWriter bw = new BufferedWriter(new FileWriter("OUTPUT.txt"));
		s = br.readLine();
		int T = Integer.parseInt(s);
		
		
		int t = 1;
		while(t <= T){
			s = br.readLine();
			sp = s.split(" ");
			int ans = 0;
			int a = Integer.parseInt(sp[0]);
			int b = Integer.parseInt(sp[1]);
			
			if(a < 10){
				a = 10;
			}
			while(a < b){
			
				String sa = Integer.toString(a);
				
				Set<String> set = new HashSet<String>();
				for(int i = 1; i < sa.length(); i++){
					String f = sa.substring(0, i);
					String ba = sa.substring(i);
					String ns = ba + f;
					if(set.contains(ns)){
						continue;
					}
					set.add(ns);
					int nb = Integer.parseInt(ns);
					if(nb > a && nb <= b){
						ans++;
					}
				}

				a++;
			}
			
			bw.write("Case #" + t + ": " + ans +  "\n");

			t++;
		}
		
		bw.close();
	}
	

	
	

	public static void main(String[] args) throws Exception {
		GC b = new GC();
		b.run();
	}

}
