/*
 * 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.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.LinkedList;
import java.util.StringTokenizer;


public class Principal 
{
	public static void main(String [] args) throws IOException
	{
		Secundaria sec = new Secundaria();
		
		FileReader fr = new FileReader("C-small-attempt1.in");
		BufferedReader bf = new BufferedReader(fr);
		
		FileWriter bw = new FileWriter("C-small-attempt1.out");
		
		int res;
		int times = Integer.parseInt(bf.readLine());
		
		String str = bf.readLine();
		int i = 1;
		while(i <= times)
		{
			StringTokenizer st = new StringTokenizer(str);	
			int primero = Integer.parseInt(st.nextToken());
			int segundo = Integer.parseInt(st.nextToken());
			bw.write("Case #");
			bw.write(String.valueOf(i));
			bw.write(": ");
			res = sec.nVeces(primero, segundo);
			bw.write(Integer.toString(res));
			bw.write("\n");
			str = bf.readLine();
			i++;
		}
		bw.close();
	}
}
