package qual;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		new RecycledNumbers().run();

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}

package commons;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.LinkedList;
import java.util.List;

public class FileUtilities {
    
    public static void writeFile(List<String> strings, File file) 
            throws IOException {
        
        file.createNewFile();
        FileWriter writer = new FileWriter(file);
        
        for (int i = 1; i <= strings.size(); i++) {
            writer.write("Case #");
            writer.write(i + ": ");
            writer.write(strings.get(i-1));
            writer.write("\n");
        }
        
        writer.close();
    }
    
    public static List<String> readFile(File file) throws IOException {
        
        BufferedReader reader = new BufferedReader(new FileReader(file));
        
        String input = reader.readLine();
        List<String> result = new LinkedList<String>();
        
        while (!(input == null)) {
            result.add(input);
            input = reader.readLine();
        }
        
        reader.close();
        
        return result;
    }
}
