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.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;


public class ProblemC {



	
	
	// *************************************************************************************
	// *********************************** FRAMEWORK ***************************************
	// *************************************************************************************
	
	public static BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
	public static boolean isStandardInput = false;
	
	public static File input;
	public static FileReader inputreader;
	public static BufferedReader in;
	
	public static File output;
	public static FileWriter outputwriter;
	public static BufferedWriter out;
	
	public static StringTokenizer st;
	
	public static void main(String[] args) throws Exception {
		doSTDIN(true);
		setOutput("test.out");
		run();
		close();
	}
	
	public static void run() throws Exception {
		
		
		init("E:\\workspace\\2012\\src\\C-small");
		
		int cases = INT();
		
		for(int cc = 1;cc<=cases;cc++) {
			
			
			String a = TOKEN();
			String b = TOKEN();
			int count = 0;
			
			
			if (a.length() < 2){
				print("Case #"+cc+": ");
				println(0);
				continue;
			}
			
			
			int aa = Integer.parseInt(a);
			int bb = Integer.parseInt(b);
			
			for (int i = aa; i<=bb; i++){
				
				String s = ""+i;
				
				List<String> strings = new ArrayList<String>();
				strings.add(s);
				
				for (int j=0; j<s.length() - 1;j++){
					
					
					s = rotate(s);
					
					if (strings.contains(s)){
						continue;
					}else {
						strings.add(s);
					}
					
					
					int result = Integer.parseInt(s);
					
					if (aa <=result && result <= bb){
						count++;
					}
				}
			}
			
			print("Case #"+cc+": ");
			println(count/2);
		}
		
	}
	


	private static String rotate(String s) {
		
	    s = s.substring(1) + s.charAt(0);
		
		return s;
	}

	public static void init(String problemName) throws Exception {
		doSTDIN(false);
		setInput(problemName+".in");
		setOutput(problemName+".out");
	}
	
	// **************** PRINT METHODS **********************
	
	public static void println() throws IOException {
		out.write("\n");
		System.out.println();
	}
	
	public static void println(Object obj) throws IOException {
		out.write(obj.toString());
		out.write("\n");
		System.out.println(obj.toString());
	}
	
	public static void print(Object obj) throws IOException {
		out.write(obj.toString());
		System.out.print(obj.toString());
	}
	
	public static void println(long number) throws IOException {
		out.write(Long.toString(number));
		out.write("\n");
		System.out.println(number);
	}
	
	public static void print(long number) throws IOException {
		out.write(Long.toString(number));
		System.out.print(number);
	}
	
	public static void println(char c) throws IOException {
		out.write(Character.toString(c));
		out.write("\n");
		System.out.println(c);
	}
	
	public static void print(char c) throws IOException {
		out.write(Character.toString(c));
		System.out.print(c);
	}
	
	public static void println(String line) throws IOException {
		out.write(line);
		out.write("\n");
		System.out.println(line);
	}
	
	public static void print(String line) throws IOException {
		out.write(line);
		System.out.print(line);
	}
	
	// ******************** INPUT DECLARATION ******************
	
	public static void doSTDIN(boolean standard) {
		isStandardInput = standard;
	}
	
	public static void setInput(String filename) throws IOException {
		input = new File(filename);
		inputreader = new FileReader(input);
		in = new BufferedReader(inputreader);
	}
	
	public static void setOutput(String filename) throws IOException {
		output = new File(filename);
		outputwriter = new FileWriter(output);
		out = new BufferedWriter(outputwriter);
	}
	
	public static void close() throws IOException {
		if(in!=null)in.close();
		if(inputreader!=null)inputreader.close();
		
		if(out!=null)out.flush();
		if(out!=null)out.close();
		if(outputwriter!=null)outputwriter.close();
	}
	
	// ************************** INPUT READING *****************
	
	static String LINE() throws IOException { return isStandardInput?stdin.readLine():in.readLine(); }
	static String TOKEN() throws IOException {
		while (st == null || !st.hasMoreTokens())st = new StringTokenizer(LINE());
		return st.nextToken();
	}
	static int INT() throws IOException {return Integer.parseInt(TOKEN());}
	static long LONG() throws IOException {return Long.parseLong(TOKEN());}
	static double DOUBLE() throws IOException {return Double.parseDouble(TOKEN());}
	static BigInteger BIGINT() throws IOException {return new BigInteger(TOKEN());}

	
}
