/*
 * 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.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;

public class main {

	public static void main(String[] args) throws IOException{
		BufferedReader br  = new BufferedReader(new FileReader("C-small-attempt0.in"));
		BufferedWriter bw = new BufferedWriter(new FileWriter("out.txt"));
		Pattern pat = Pattern.compile(" ");
		String firstLine = (br.readLine());
		Integer numLines = new Integer(firstLine);
		Integer i;
		
		for(i=1;i<=numLines;i++){
			bw.write("Case #"+i+": ");
			String line = (br.readLine()).trim();
			String [] st= pat.split(line);
			Integer a = new Integer(st[0]);
			Integer b = new Integer(st[1]);
			bw.write(solve(a,b).toString());
			bw.newLine();
		}
		bw.close();
	}
	
	public static Integer solve(Integer a,Integer b){
		Integer i,j;
		Integer res=0;
		for(i=a;i<=b;i++){
			for(j=i+1;j<=b;j++){
				if(isRecycledPair(i,j)){
					res++;
				}
			}
		}
		return res;
	}
	public static Boolean isRecycledPair(Integer i, Integer j){
		Integer a;
		String iS= i.toString();
		String jS= j.toString();
		for(a=1;a<=iS.length();a++){
			iS=iS.substring(1)+iS.charAt(0);
			if(iS.charAt(0)!='0'){	
				if(iS.compareTo(jS)==0){
					return true;
				}
			}
		}
		return false;
	}
}
	