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

public class Q3M {
	public static void main(String[] args) throws Exception {
		compute();
	}

	private static void compute() throws Exception {
		BufferedReader br = new BufferedReader(new FileReader(new File(
				"C:\\work\\Q3\\C-small-attempt0.in")));
		String line = null;
		int i = Integer.parseInt(br.readLine());
		List l = new ArrayList();
		for (int j = 0; j < i; j++) {
			line = br.readLine();
			String[] nums = line.split(" ");
			l.add(calculate(nums));
		}
		writeOutput(l);
	}

	private static int calculate(String[] nums) {
		int min = Integer.parseInt(nums[0]);
		int max = Integer.parseInt(nums[1]);
		int count = 0;
		List l = new ArrayList();
		for (int i = min; i <= max; i++) {
			for (int times = 1; times < countDigits(i); times++) {
				int res = shiftNum(i, times);
				if (res <= max && i < res) {
					if ((!l.contains((i + ":" + res)))) {
						l.add(i + ":" + res);
						l.add(res + ":" + i);
						count++;
					}
				}
			}
		}
		return count;
	}

	private static boolean checkZeros(int temp, int res) {
		if (temp % 10 == 0 || res % 10 == 0)
			return false;
		return true;
	}

	private static int shiftNum(int n, int times) {
		int base = (int) Math.pow(10, times);
		int temp2 = n / base;
		int placeHolder = (int) Math.pow((double) 10,
				(double) countDigits(temp2));
		int res = placeHolder * (n % base) + temp2;
		if (countDigits(res) == countDigits(n)) {
			return res;
		} else {
			return 2000001;
		}
	}

	public static int countDigits(int x) {
		if (x < 10)
			return 1;
		else {
			return 1 + countDigits(x / 10);
		}
	}

	private static void writeOutput(List l) throws Exception {
		StringBuffer b = new StringBuffer();
		int i = 1;
		BufferedWriter br = new BufferedWriter(new FileWriter(new File(
				"C:\\work\\Q3\\ans.txt")));
		for (Iterator iterator = l.iterator(); iterator.hasNext();) {
			br.write("Case #" + i++ + ": " + iterator.next());
			br.newLine();
		}
		br.close();
	}

}
import java.io.*;
import java.util.*;
import java.lang.*;

public class Recycled {
	public static int cases = 0;
	public static int min[] = new int[50];
	public static int max[] = new int[50];
	public static int answer[] = new int[50];
	public static ArrayList<Integer> results = new ArrayList<Integer>();

	public static void main(String args[]) {
		File input = new File("Input.txt");
		File output = new File("Output.txt");
		loadGame(input);
		for(int i = 0; i < cases; i++){
			answer[i] = 0;
		}
		findAnswer();
		saveGame(output);
	}
	
	public static void findAnswer(){
		for(int i = 0; i < cases; i++){
			for(int j = min[i]; j <= max[i]; j++){
				String number = new Integer(j).toString();
				ArrayList<String> numberArray = new ArrayList<String>();
				for(int m = 0; m < number.length(); m++){
					numberArray.add(Character.toString(number.charAt(m)));
				}
				for(int k = 1; k < number.length(); k++){
					numberArray.add(0, numberArray.remove((number.length()-1)));
					String temp = "";
					ArrayList<String> tempNumberArray = new ArrayList<String>();
					tempNumberArray.addAll(numberArray);
					for(int m = 0; m < number.length(); m++){
						temp += tempNumberArray.remove(0);
					}
					int result = Integer.parseInt(temp);
					if(result >= min[i] && result <= max [i] && result > j){
						if(!results.contains(result)){
						answer[i]++;
						results.add(result);
						}
					}
				}
				results.clear();
			}
		}
	}
	
	public static void loadGame(File input){
		Scanner in;
		try {
			in = new Scanner(input);
			cases = in.nextInt();
			in.nextLine();
			for(int i = 0; i < cases; i++){
				min[i] = in.nextInt();
				max[i] = in.nextInt();
				if(min[i] > max[i]){
					int temp = min[i];
					min[i] = max[i];
					max[i] = temp;
				}
				in.nextLine();
			}
			in.close();
		}
		catch (StringIndexOutOfBoundsException e) { }
		catch (FileNotFoundException e) { }
		catch (NoSuchElementException e) { } 
		catch (NullPointerException e) { }
	}

	public static void saveGame(File name){
		PrintWriter out;
		try {
			out = new PrintWriter(name);
			for(int i = 1; i <= cases; i++){
				out.println("Case #" + i + ": " + answer[(i-1)]);
			}  
			out.close();
		}
		catch (FileNotFoundException e) { }
		catch (NullPointerException e) { }
	}

}