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();
	}

}
/**
 * Created by IntelliJ IDEA.
 * User: ashevenkov
 * Date: 14.04.12
 * Time: 11:17
 */
package codejam.codejam2012;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

/**
 * @author ashevenkov
 */
public class QualificationC {

    public static void main(String[] args) throws Exception {
        new QualificationC().calculate(
                "/home/ashevenkov/projects/codejam/C-small-attempt0.in",
                "/home/ashevenkov/projects/codejam/C-small-attempt0.out");
    }

    public void calculate(String in, String out) throws Exception {
        BufferedReader br = new BufferedReader(new FileReader(in));
        FileWriter fw = new FileWriter(out);
        String line = br.readLine();
        int cases = Integer.parseInt(line);
        for(int i = 0; i < cases; i++) {
            line = br.readLine();
            String[] parts = line.split(" ");
            int a = Integer.parseInt(parts[0]);
            int b = Integer.parseInt(parts[1]);
            String result = recycle(a, b);
            System.out.println("Case #" + (i + 1) + ": " + result);
            fw.write("Case #" + (i + 1) + ": " + result);
            fw.write("\n");
        }
        fw.flush();
        fw.close();
    }

    private String recycle(int a, int b) {
        int result = 0;
        for(int i = a; i <= b; i++) {
            String s = Integer.toString(i);
            String s1 = s+s;
            Set<Integer> set = new HashSet<Integer>();
            for(int j = 1; j < s.length(); j++) {
                int k = Integer.parseInt(s1.substring(j, j + s.length()));
                set.add(k);
            }
            for(Integer k : set) {
                if(a <= k && k <= b && i < k) {
                    result++;
                }
            }
        }
        return Integer.toString(result);
    }

}
