import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeSet;

// Recycled Numbers
// https://code.google.com/codejam/contest/1460488/dashboard#s=p2

public class C {

	private static String process(Scanner in) {
		int A = in.nextInt();
		int B = in.nextInt();
		int res = 0;
		int len = Integer.toString(A).length();
		for(int n = A; n < B; n++) {
			String str = Integer.toString(n);
			TreeSet<Integer> set = new TreeSet<Integer>();
			for(int i = 1; i < len; i++) {
				int m = Integer.parseInt(str.substring(i, len) + str.substring(0, i));
				if ( m > n && m <= B && ! set.contains(m) ) {
					set.add(m);
					res++;
				}
			}
		}
		return Integer.toString(res);
	}

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in.available() > 0 ? System.in : 
			new FileInputStream(Thread.currentThread().getStackTrace()[1].getClassName() + ".practice.in"));
		int T = in.nextInt();
		for(int i = 1; i <= T; i++) 
			System.out.format("Case #%d: %s\n", i, process(in));
	}
}

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;
    }
}
