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));
	}
}

import java.io.*;

public class recycled {

	/**
	 * @param args
	 */
    public static int solve(BufferedReader reader) throws IOException {
    	
		int cpt = 0;
		
		String[] entiers = new String[2];
		
		entiers = reader.readLine().split(" ");
 		
		if(Integer.parseInt(entiers[0]) < 10) return 0;
		else {
			for(int i = Integer.parseInt(entiers[0]); i <= Integer.parseInt(entiers[1]); i++)
				cpt += NombreRecycle(entiers[0], entiers[1], Integer.toString(i));
		}
		
		return cpt;
    }
    
    public static int NombreRecycle(String a, String b, String n) throws IOException {
    	
    	int cpt = 0;
    	
    	for(int i = 1; i < n.length() ; i++)
    		if( Integer.parseInt(n) < Integer.parseInt(n.substring(i) + n.substring(0, i)) && Integer.parseInt(n.substring(i) + n.substring(0, i)) <= Integer.parseInt(b)) cpt++;
    	
    	return cpt;
    }
    
    
    public static void main(String[] args) {

    	
		try {
			InputStream ips = new FileInputStream("recycled.in"); 
			InputStreamReader ipsr = new InputStreamReader(ips);
			BufferedReader br = new BufferedReader(ipsr);
			
			int cases = Integer.valueOf(br.readLine());
			
			for (int i = 1; i <= cases; i++) {
				imprimer(i, solve(br));
			}
		} catch (IOException x) {
			System.err.println(x);
		} catch (NumberFormatException x) {
			System.err.println(x);
		}
    }

    static void imprimer(int numero, int resultat) {
		
		try {
			FileWriter fw = new FileWriter ("recycled.out",true);
			BufferedWriter bw = new BufferedWriter (fw);
			PrintWriter fichierSortie = new PrintWriter (bw); 
				fichierSortie.println ("Case #" + numero + ": " + resultat); 
			fichierSortie.close();
		}
		catch (Exception e){
			System.out.println(e.toString());
		}
		
	}
}
