import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package codejamc;

import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.*;

/**
 *
 * @author strigazi
 */
public class CodejamC {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        TextFile file = new TextFile("input.txt");
        Iterator<String> it = file.iterator();
        PrintWriter out = new PrintWriter(new FileWriter("output.txt"));
        String next; next = it.next();
        Integer cases,t; cases = new Integer(Integer.parseInt(next));
        Integer counter=0,A,B,comb=0,nn,mm;
        String sA,sB,n,m;
        StringTokenizer st;
        Set<String> set = new HashSet();
        while(it.hasNext()){
            set.clear();
            counter++;
            next = it.next();
            st = new StringTokenizer(next," ");
            sA = st.nextToken();
            sB = st.nextToken();
            A = Integer.parseInt(sA);
            B = Integer.parseInt(sB);
            
            for(int i=A;i<B;i++){
                t=i;
                n = new String();
                n = t.toString();
                for(int j=0;j<n.length();j++){
                    m = new String();
                    m = n.substring(j, n.length())+n.substring(0, j);
                    mm = new Integer(Integer.parseInt(m, 10));
                    if(m.charAt(0)!='0' && n.charAt(0)!='0'){
                        if((mm<=B) && mm!=i && mm>i){
                            if(!set.contains(m+","+n)){
                                set.add(n+","+m);
                                System.out.println(n+","+m);
                            }
                                
                        }
                    }
                }
            }
            out.println("Case #"+counter+": "+set.size());
            
        }
        
        out.close();
    }
}
