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.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;


public class Qualification_C {
	
	private static final boolean DEBUG = false;

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {

		List<String> input = readFile(args[0]);
		int testCases = Integer.parseInt(input.get(0));
		String outputFilename = args[0].substring(0, args[0].length() - 2) + "out";
		
		FileOutputStream output = new FileOutputStream(outputFilename);
		
		try {
			for (int i = 1; i <= testCases; i++) {
				String[] splitted = input.get(i).split(" ");
				int min = Integer.parseInt(splitted[0]);
				int max = Integer.parseInt(splitted[1]);
				
				outputResult(output, i, String.valueOf(getNoOfDistinctPair(min, max)));
			}
		} finally {
			
			if (output != null) {
				output.close();
			}
		}
	}
	
	public static int getNoOfDistinctPair(int min, int max) {
		
		int result = 0;
		int value1 = min;
		int value2 = value1 + 1;
		
		while (value1 != value2 && value1 <= max) {
			String value1Str = String.valueOf(value1);
			value2 = value1 + 1;
			
			while (value2 <= max) {
				String value2Str = String.valueOf(value2);
				StringBuilder compareValue = new StringBuilder(value2Str);
				
				for (int i = 0; i < value2Str.length(); i++) {
//					debug("compare: " + value1Str + " == " + compareValue.toString());
					if (value1Str.equals(compareValue.toString())) {
						debug(value1Str + " == " + value2Str + ": " + value1Str + " = " + compareValue.toString());
						result++;
						break;
					}
					compareValue.append(compareValue.charAt(0));
					compareValue.deleteCharAt(0);
				}
				
				value2++;
			}
			value1++;
		}
		
		return result;
	}
	
	public static List<String> readFile(String filename) throws IOException {

		List<String> lines = new ArrayList<String>();
		BufferedReader reader = new BufferedReader(new InputStreamReader(
				new FileInputStream(filename)));

		try {
			String data;
			while ((data = reader.readLine()) != null) {
				lines.add(data);
			}
		} finally {
			reader.close();
		}
		
		return lines;
	}
	
	private static void outputResult(FileOutputStream output, int caseNo, String result) throws IOException {
		output.write(String.format("Case #%d: %s\r\n", caseNo, result).getBytes());
	}

	private static void debug(String debug) {
		if (DEBUG) {
			System.out.print(debug + "\r\n");
		}
	}
}
