/*
 * 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.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.List;



public class Numbers {
	
	public static FileReader fr;
	public static BufferedReader br;
	public static FileWriter fw;
	public static BufferedWriter bw;
	
	
	public void read(String path) throws Exception
	{
		 fr = new FileReader(path);
		
		 br=new BufferedReader(fr);
	
	}
	
	
	public void write(String path) throws Exception
	{
		
	}
	
	public void execute(BufferedReader br,String path)throws Exception
	{
		
		String s;
		
		fw =new FileWriter(path,false);
		bw=new BufferedWriter(fw);
		s=br.readLine();	
		int i1=1;
		
		while((s=br.readLine())!=null)
		{
			int count =0;
			String st[]=s.split("\\s");
			int a=Integer.parseInt(st[0]);
			int b=Integer.parseInt(st[1]);
			
			
			
			for(int i=a;i<=b;i++)
			{
				int temp=i;
				String abc=Integer.toString(temp);
				int length=abc.length();
				int index=length-1;
				String tempString=abc;
				while(index>0)
				{
				
					String first=tempString.substring(0, index);
					String second=tempString.substring(index,length);
					abc=second+first;
					int newnumber=Integer.parseInt(abc);
					if((newnumber<=b && newnumber>temp )&& !abc.startsWith("0") && (Integer.toString(temp).length())==abc.length())
						count++;
					
					index--;
						
				}
			}
			
			bw.write("Case #"+ i1++ +": " +count +"\n");
			
			
			
			
		
		}
		bw.close();
		fr.close();
		
		
	}
	public static void main(String[] args) throws Exception
	
	{
		Numbers t=new Numbers();
		t.read("E:\\codejam\\Files\\A.in");
		t.execute(br,"E:\\codejam\\Files\\A.out");
	
		
	}

}
