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.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;


public class RecycledNumbers {
	static int caso=0;	
	static int valor=0;
	static String output="";
	static String thisline="";
	static String filesalida="/home/rik/filenumbers.txt";
	static String n1;
	static String n2;
	
	public static void analize(String[] numbers){
		n1=numbers[0];
		n2=numbers[1];	
		valor=0;
		for(int x=Integer.parseInt(n1);x<=Integer.parseInt(n2);x++){
				runString(String.valueOf(x));		
		}	
		caso++;
		output+="Case #"+caso+": "+valor+"\n";
	}	
	
	public static void runString(String num){	
		for(int x=1;x<num.length();x++){
			String inic=num.substring(0, x);
			String from=num.substring(x, num.length());			
			if(Integer.parseInt(from+inic)>Integer.parseInt(num)){
				if(Integer.parseInt(inic+from)>=Integer.parseInt(n1)&&Integer.parseInt(inic+from)<=Integer.parseInt(n2)&&Integer.parseInt(from+inic)>=Integer.parseInt(n1)&&Integer.parseInt(from+inic)<=Integer.parseInt(n2)){
					valor++;
				}else{
					continue;
				}
			}			
		}		
	}
	
	public static void readFile(String filename){
		BufferedReader entrada;
		BufferedWriter salida;
		try {
		entrada = new BufferedReader(new FileReader(filename));
		entrada.readLine();
		while(entrada.ready()){
			String[] numbers;
			numbers=entrada.readLine().split(" ");
			analize(numbers);			
		}
		}catch (Exception e){
			e.printStackTrace();
		}
		System.out.println(output);
		try {
			salida= new BufferedWriter(new FileWriter(filesalida));
			salida.write(output);
			 try {
	                if (salida != null) {
	                    salida.flush();
	                    salida.close();
	                }
			 } catch (IOException ex) {
	                ex.printStackTrace();
	            }  
		} catch (IOException e) {
			e.printStackTrace();
		}
		
	}
	public static void main (String args[]){
		System.out.print("file path: ");
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));	
		   try {
			   	 String userinput;
		         userinput = br.readLine();
		         readFile(userinput);
		      } catch (IOException ioe) {
		         System.out.println("IO error");
		         System.exit(1);
		      }   
		
	}	
}
