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.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.Scanner;


public class CodeJamWriter implements ICounterZeroEvent{
	
	//public static String inputFile = "C:\\Users\\user\\Desktop\\coejam\\2012-Qualificaton\\A-test";
	//public static String inputFile = "C:\\Users\\user\\Desktop\\coejam\\2012-Qualificaton\\A-small-attempt0";
	//public static String inputFile = "C:\\Users\\user\\Desktop\\coejam\\2012-Qualificaton\\B-test";
	//public static String inputFile = "C:\\Users\\user\\Desktop\\coejam\\2012-Qualificaton\\B-small-attempt0";
	//public static String inputFile = "C:\\Users\\user\\Desktop\\coejam\\2012-Qualificaton\\B-large";
	//public static String inputFile = "C:\\Users\\user\\Desktop\\coejam\\2012-Qualificaton\\C-test";
	public static String inputFile = "C:\\Users\\user\\Desktop\\coejam\\2012-Qualificaton\\C-small-attempt0";
	//public static String inputFile = "C:\\Users\\user\\Desktop\\coejam\\2012-Qualificaton\\C-large";
	
	public int T;
	public Result[] results;

	public static void main(String[] args) {
		CodeJamWriter codeJamWriter = new CodeJamWriter();
		codeJamWriter.readInput();
	}

	private void readInput() {
		Scanner scanner = null;
		File input = new File(inputFile+".in");
		try {
			scanner = new Scanner(input);
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		T = scanner.nextInt();
		scanner.nextLine();
		results = new Result[T+1];
		Counter counter = new Counter(T, this);
		for (int i=1;i<=T;++i)
		{
			results[i] = new Result(i);
			Question q = new QuestionC(results[i], counter);
			q.readInput(scanner);
			q.start();
		}
		scanner.close();	
	}

	private void writeOutput() {
		FileOutputStream fos = null;
		PrintStream printer = null;
		File output = new File(inputFile+".out");
		try {
			fos = new FileOutputStream(output);
			printer = new PrintStream(fos);
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		for (int i=1;i<=T;++i)
		{
			printer.println(results[i]);
		}
		System.out.println("FINISHED!!!");
		
		printer.close();
		
	}

	@Override
	public void fireEvent() {
		writeOutput();		
	}
	
}
