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));
			
		}
		
		
		

	}
	
	
}
package com.google.cj;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.log4j.Logger;

public class IOHandler {
	private static Logger logger = Logger.getLogger(IOHandler.class);

	public static List<String> readInput(String fileName) {
		List<String> fileContents = new ArrayList<String>();
		BufferedReader reader = null;
		try {
			reader = new BufferedReader(new FileReader(fileName));
			String line = null;

			while ((line = reader.readLine()) != null) {
				fileContents.add(line);
			}

		} catch (IOException e) {
			logger.error(e);
		} finally {
			try {
				reader.close();
			} catch (IOException e) {
				logger.error(e);
			}
		}
		Integer noTestCases = Integer.valueOf(fileContents.remove(0));
		System.out.println("No. of test cases [" + noTestCases + "]");

		return fileContents;
	}

	public static void writeOutput(List<String> outputList, String fileName) {
		List<String> finalList = new ArrayList<String>();
		int i = 1;
		for (String output : outputList) {
			finalList.add("Case #" + i + ": " + output);
			i++;
		}

		BufferedWriter out = null;
		try {
			out = new BufferedWriter(new FileWriter(fileName));
			for (String line : finalList) {
				out.write(line);
				out.newLine();
			}
		} catch (IOException e) {
			logger.error(e);
		} finally {
			try {
				out.close();
			} catch (IOException e) {
				logger.error(e);
			}
		}
	}
}
