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 ex3;

import java.io.*;
import java.util.ArrayList;
import java.util.HashMap;

/**
 *
 * @author Jean-Nicolas
 */
public class Ex3 {

    public static String readFile(File file) {

        String result = "";
        try {
            InputStream ips = new FileInputStream(file);
            InputStreamReader ipsr = new InputStreamReader(ips);
            BufferedReader br = new BufferedReader(ipsr);
            String line;
            while ((line = br.readLine()) != null) {
                result += line + "\n";
            }
            br.close();
            result.substring(0, Math.max(0, result.length() - 1)); // Deletion of the last \n
        } catch (Exception e) {
            System.out.println(e.toString());
        }

        return result;
    }

    public static void writeFile(File file, String data) {
        try {
            BufferedWriter out = new BufferedWriter(new FileWriter(file));
            out.write(data);
            out.close();
        } catch (IOException ex) {
            System.out.println("Exception ");
        }
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here


        String data = readFile(new File("data.txt"));
        String[] lines = data.split("\n");
        String resultStr = "";

        ArrayList<Integer> results = new ArrayList<>();

        for (int i = 1; i < lines.length; i++) {
            String[] values = lines[i].split(" ");

            int A = Integer.parseInt(values[0]);
            int B = Integer.parseInt(values[1]);

            HashMap<Pair, Boolean> alreadyUsed = new HashMap<>();


            for (int n = A; n <= B; n++) {
                String nStr = String.valueOf(n);

                for (int j = 0; j < nStr.length(); j++) {
                    String nStr2 = nStr.substring(j) + nStr.substring(0, j);
                    int m = Integer.parseInt(nStr2);

                    Pair pair = new Pair(n, m);
                    
                    if (alreadyUsed.get(pair) == null && (A <= n && n < m && m <= B)) {
                        alreadyUsed.put(pair, true);
                    }
                }

            }

            resultStr += "Case #" + i + ": " + alreadyUsed.size() + "\n";
        }

        resultStr = resultStr.substring(0, resultStr.length() - 1);
        System.out.println(resultStr);
        writeFile(new File("result.txt"), resultStr);
    }
}
