import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
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());}

	
}
