/*
 * 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);
        
    }
    }
}

/**
 * Google CodeJam 2012
 * Qualification round - Problem C
 * Recycled Numbers
 * 
 * Solved by Üllar Soon <positivew@gmail.com>
 */
package eu.positivew.codejam.recycled;

import java.io.BufferedReader;
import java.io.IOException;

import eu.positivew.codejam.framework.CodeJamInputCase;
import eu.positivew.codejam.framework.CodeJamInputParser;


/**
 * Recycled Numbers input parser class.
 * 
 * @author Üllar Soon <positivew@gmail.com>
 */
public class RecycledNumbersParser implements CodeJamInputParser {

	@Override
	public CodeJamInputCase readCase(BufferedReader input) {
		CodeJamInputCase inCase;
		
		try {
			String line = input.readLine();
			String[] args = line.split(" ");
			Integer[] abArr = new Integer[args.length];
			for(int i = 0; i < args.length; i++) {
				try {
					abArr[i] = Integer.parseInt(args[i]);
				}
				catch(NumberFormatException ex) {
					System.err.println("Badly formatted test case data!");
				}
			}
			inCase = new RecycledNumbersCase(abArr);
			return inCase;
		}
		catch (IOException e) {
			System.err.println("Failed to read test case data!");
			return null;
		}
	}

}
