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();
	}

}
/**
 * Copyright 2012 Christopher Schmitz. All Rights Reserved.
 */

package com.isotopeent.codejam.lib;

import java.io.File;
import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;

public class Utils {

	private static final String FILE_IN_EXTENSION = ".in";
	private static final String FILE_OUT_EXTENSION = ".out";
	private static final String OUT_DATE_FORMAT = "_yyyy-MM-dd_HH-mm-ss";

	public static <T> void solve(String filePath, String fileName, InputConverter<T> inputConverter, SolverBase<T> solver) {
		File folder = new File(filePath);
		File fin = getInputFile(folder, fileName);
		File fout = getOutputFile(folder, fileName);
		if (!fout.exists()) {
			try {
				fout.createNewFile();
			} catch (IOException e) {
				System.err.println("Error creating file " + fout.getAbsolutePath());
				e.printStackTrace();
			}
		}
		InputReader<T> reader = null;
		SolutionWriter writer = null;
		try {
			reader = new InputReader<T>(fin, inputConverter);
			solver.init(reader);
			writer = new SolutionWriter(fout);
	
			int caseNum = 1;
			String solution;
			long startTime = System.currentTimeMillis();
			while ((solution = solver.solveNext()) != null) {
				writer.writeSolution(caseNum++, solution);
				writer.flush();
			}
			int time = (int)(System.currentTimeMillis() - startTime);
			System.out.println("Done in " + (time / 1000) + " seconds (" + (time / (caseNum - 1)) + "ms average)");
		} catch (Exception e) {
			System.err.println("Error solving");
			e.printStackTrace();
		}
		if (reader != null) {
			try {
				reader.close();
			} catch (IOException e) {
				// do nothing
			}
		}
		if (writer != null) {
			writer.flush();
			writer.close();
		}
	}

	public static File getInputFile(File folder, String fileName) {
		return new File(folder, fileName + FILE_IN_EXTENSION);
	}

	public static File getOutputFile(File folder, String fileName) {
		DateFormat dateFormat = new SimpleDateFormat(OUT_DATE_FORMAT);
		String date = dateFormat.format(Calendar.getInstance().getTime());
		return new File(folder, fileName + date + FILE_OUT_EXTENSION);
	}

	public static String[] convertToStringArray(String line) {
		return line.split(" ");
	}

	public static int[] convertToIntArray(String line, int count) {
		int[] items = new int[count];
		int wordStart = 0;
		for (int i = 0; i < count; i++) {
			int wordEnd = line.indexOf(' ', wordStart);
			if (wordEnd < 0) {
				wordEnd = line.length();
			}
			int param = Integer.parseInt(line.substring(wordStart, wordEnd));
			items[i] = param;
			wordStart = wordEnd + 1;
		}
		return items;
	}

	public static int convertToIntArray(String line, int[] itemsOut) {
		int count = 0;
		int wordStart = 0;
		int length = line.length();
		while (wordStart < length) {
			int wordEnd = line.indexOf(' ', wordStart);
			if (wordEnd < 0) {
				wordEnd = line.length();
			}
			int param = Integer.parseInt(line.substring(wordStart, wordEnd));
			itemsOut[count++] = param;
			wordStart = wordEnd + 1;
		}
		return count;
	}

}
