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 codejam;

import java.io.*;
import java.util.Scanner;


public final class ReadWriteTextFile {


  
  /** Constructor. */
  ReadWriteTextFile(){
        try {
                out =new BufferedWriter(new FileWriter("output.in"));
            
                
              scanner = new Scanner(new FileInputStream("input.in"));
              

        } catch (FileNotFoundException ex) {
                  }catch (IOException ex) {
                
            }
  
      
  }
  
  /** Write fixed content to the given file. */
  void writeNextLine(int text)   {
        try {
            out.write("Case #"+lineNumber +": "+text+"\r\n");
  
            System.out.println("Case #"+lineNumber +": "+text);
            
        } catch (IOException ex) {
            
                 }
    
   lineNumber++;
  }
  
   String readLine()  {
    
       
       String output = scanner.nextLine();
      
    return output;
    
  }
   int readIntLine(){
    
    String output = scanner.nextLine();  
       return Integer.decode(output).intValue();
   }
   int readInt(){
    
       return scanner.nextInt();
   }
   
   public void close()
   {
        try {
            out.close();
        } catch (IOException ex) {
              }
   scanner.close();
   }
  // PRIVATE 
  private int lineNumber = 1;
  private BufferedWriter out = null;
  private Scanner scanner = null;
  
}