/*
 * 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.util.*;
class Replace
{
	public static void main(String args[])throws Exception
	{
		//Scanner sc = new Scanner(System.in);
		// PrintWriter pw = new PrintWriter(System.out);
		Scanner sc = new Scanner(new FileReader("C-small-attempt1.in"));
		//Console console=System.console(new FileReader("B-small-practice-1.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("C-small-attempt1.out"));
		int ntest = sc.nextInt();
		//int a=100;
		//int b=500;
		
		for(int k=1;k<=ntest;k++)
		{
		int sum=0;
		int count=0;
		//int a=Integer.parseInt(sc.next());
		//int b=Integer.parseInt(sc.next());
		int a=sc.nextInt();
		int b=sc.nextInt();
		
		for(int i=a;i<=b;i++)
		{
				if(i>0 && i<100)
				{
					int rem=i%10;
					sum=rem*10+i/10;
					if(sum==i)
					{
					}
					else if(sum>=a && sum<=b)
					{
						count++;
						System.out.println(i);
						//System.out.println("garg");
					}
				}
				if(i>=100 && i<1000)
				{
					int rem=i%100;
					sum=rem*10+i/100;
					//System.out.println(i);
					
					if(sum==i)
					{
					}
					else if (sum>=a && sum<=b)
					{
						count++;
						//System.out.println(i);
					}
					//System.out.println("lucky");
					rem=i%10;
					sum=rem*100+i/10;
					if(sum==i)
					{
					}
					else if(sum>=a && sum<=b)
					{
						count++;
						//System.out.println(i);
						//System.out.println("garg");
					}
				}
					
					
				
		}
		pw.print("Case #" + k + ": ");
		pw.print(count/2);
		pw.println();
		}
		pw.close();
		sc.close();
	}
}