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.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Hashtable;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author sanket
 */
public class RecycledNumbers {

    public static void main(String[] args) {
        // TODO code application logic here
        try {
            FillHash();
            FileInputStream fstream = new FileInputStream("C-small-attempt0.in");
            // Get the object of DataInputStream
            DataInputStream in = new DataInputStream(fstream);


            //System.out.print(" Enter N :");
            BufferedReader br;
            br = new BufferedReader(new InputStreamReader(in));
            ReadFile(br);


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

    public static void FillHash() {
    }

    public static String GetNumbersOfPair(long A, long B) {

        ArrayList<String> a = new ArrayList<String>();


        int cnt = 0;
        for (long i = A; i <= B; i++) {

            for (long j = i; j <= B; j++) {

                String word = String.valueOf(j);
                for (int k = 0; k < word.length(); k++) {
                    StringBuilder w = new StringBuilder();
                    w.append(word.substring(word.length() - (k + 1), word.length()));
                    w.append(word.substring(0, word.length() - (k + 1)));
                    //System.out.println(w + "  word :" + word);

                    if (i == Long.parseLong(w.toString()) && i != j) {

                        // for distinct pair 
                        if (!a.contains(i + "" + j)) {
                            a.add(i + "" + j);
                            cnt++;
                        }



                    }
                }

            }


        }


        return cnt + "";

    }

    public static void ReadFile(BufferedReader br) {
        try {
            String output = "";
            StringBuilder sb = new StringBuilder();
            int N = Integer.parseInt(br.readLine());

            int items[] = new int[N];
            for (int i = 0; i < N; i++) {
                StringBuilder sbTemp = new StringBuilder(br.readLine());
                sb.append("Case #");
                sb.append((i + 1));
                sb.append(": ");

                String A = String.valueOf(sbTemp.substring(0, sbTemp.indexOf(" ")));
                String B = String.valueOf(sbTemp.substring(sbTemp.indexOf(" ") + 1, sbTemp.length()));

                sb.append(GetNumbersOfPair(Long.parseLong(A), Long.parseLong(B)));


                output = output + sb + "\n";
                sb.delete(0, sb.length());
            }

            // output starts         
            System.out.print(output);
        } catch (Exception ex) {
        }
    }
}
