package qual;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		new RecycledNumbers().run();

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}

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());}

	
}
