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();
	}

}
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package recyclednumbers;

/**
 *
 * @author vandit
 *//*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.lang.String;
import java.util.HashSet;
import java.util.StringTokenizer;

/**
 *
 * @author vandit
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        String filePathIn = args[0];
        String filePathOut = args[1];
        //String filePathIn = "/home/vandit/Desktop/GoogleCodeJam/Qualifying round/testinput.in";
        //String filePathOut = "/home/vandit/Desktop/GoogleCodeJam/Qualifying round/testOutput.out";
        FileReader fr = null;
        BufferedReader inputFileReader = null;
        FileWriter fw = null;
        BufferedWriter outputFileWriter = null;
        try {
            fr = new FileReader(filePathIn);
            inputFileReader = new BufferedReader(fr);

            fw = new FileWriter(filePathOut);
            outputFileWriter = new BufferedWriter(fw);


            int numberOfTestCases = Integer.parseInt(inputFileReader.readLine());

            for (int i = 0; i < numberOfTestCases; i++) {
                String inputContent = inputFileReader.readLine();
                
                StringTokenizer tokenizer = new StringTokenizer(inputContent);
                int startingNumber = Integer.parseInt(tokenizer.nextToken());
                int endingNumber = Integer.parseInt(tokenizer.nextToken());

                HashSet<Pair> numbers =  new RecycleNumbers().findAllRecycledNumbers(startingNumber,endingNumber);
                
                String outputContent = Integer.toString(numbers.size());
                //String outputContent =
                String output = "Case #" + (i+1) + ": " + outputContent+"\n";
                outputFileWriter.write(output);

            }
        outputFileWriter.flush();

        } catch (Exception ex) {
            ex.printStackTrace();

        } finally {
            try {
                outputFileWriter.close();
                inputFileReader.close();
                fr.close();
                fw.close();
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
    }
}

