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

public class Test {

	public void doMain() throws Exception{
		Scanner input = new Scanner(new FileReader("./iothings/C-small-attempt0.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("./iothings/output.txt"));
        int n = input.nextInt();
        for(int i = 0 ; i < n ; i++){
            int A = input.nextInt();
            int B = input.nextInt();
            boolean[] ispaired = new boolean[B+1];
            pw.println("Case #"+(i+1)+": "+num(A,B,ispaired));
        }
		input.close();
		pw.flush();
		pw.close();
	}
	    	
    public static int num(int A,int B,boolean[] ispaired){
    	int count = 0;
    	for(int i = A ; i <= B ; i++){
    		StringBuilder sb = new StringBuilder(i+"");
    		boolean same = false;
    		ispaired[i] = true;
    		while(!same){
    			sb.append(sb.charAt(0));
    			sb.deleteCharAt(0);
    			if(Integer.parseInt(sb.toString()) == i){
    				same = true;
    			}else if(A <= Integer.parseInt(sb.toString()) && Integer.parseInt(sb.toString()) <= B && sb.charAt(0) != '0' && !ispaired[Integer.parseInt(sb.toString())]){
    				count++;
    			}
    		}
    	}
    	return count;
    }
	
	public static void main(String[] args) throws Exception{
		(new Test()).doMain();
	}	
	
	
}
