import java.io.*;
import java.util.*;

public class C {

    void solve() throws IOException {
        in("C-large.in"); out("C-large.out");

        long tm = System.currentTimeMillis();
        boolean[] mask = new boolean[2000000];
        int[] r = new int[10];
        int t = readInt();
        for (int cs = 1; cs <= t; ++cs) {
            int a = readInt();
            int b = readInt();
            int ans = 0;
            for (int m = a + 1; m <= b; ++m) {
                char[] d = String.valueOf(m).toCharArray();
                int c = 0;
                for (int i = 1; i < d.length; ++i) {
                    if (d[i] != '0' && d[i] <= d[0]) {
                        int n = 0;
                        for (int j = 0; j < d.length; ++j) {
                            int jj = i + j;
                            if (jj >= d.length) jj -= d.length;
                            n = n * 10 + (d[jj] - '0');
                        }
                        if (n >= a && n < m && !mask[n]) {
                            ++ans;
                            mask[n] = true;
                            r[c++] = n;
                        }
                    }
                }
                for (int i = 0; i < c; ++i) {
                    mask[r[i]] = false;
                }
            }
            println("Case #" + cs + ": " + ans);
            //System.out.println(cs);
        }
        System.out.println("time: " + (System.currentTimeMillis() - tm));
        exit();
    }

    void in(String name) throws IOException {
        if (name.equals("__std")) {
            in = new BufferedReader(new InputStreamReader(System.in));
        } else {
            in = new BufferedReader(new FileReader(name));
        }
    }

    void out(String name) throws IOException {
        if (name.equals("__std")) {
            out = new PrintWriter(System.out);
        } else {
            out = new PrintWriter(name);
        }
    }

    void exit() {
        out.close();
        System.exit(0);
    }

    int readInt() throws IOException {
        return Integer.parseInt(readToken());
    }

    long readLong() throws IOException {
        return Long.parseLong(readToken());
    }

    double readDouble() throws IOException {
        return Double.parseDouble(readToken());
    }

    String readLine() throws IOException {
        st = null;
        return in.readLine();
    }

    String readToken() throws IOException {
        while (st == null || !st.hasMoreTokens()) {
            st = new StringTokenizer(in.readLine());
        }
        return st.nextToken();
    }

    boolean eof() throws IOException {
        return !in.ready();
    }

    void print(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void println(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void print(Object value) {
        out.print(value);
    }

    void println(Object value) {
        out.println(value);
    }

    void println() {
        out.println();
    }

    StringTokenizer st;

    BufferedReader in;
    PrintWriter out;

    public static void main(String[] args) throws IOException {
        new C().solve();
    }
}

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Scanner;

/**
 * 
 */

/**
 * @author chuck.rolek
 *
 */
public class Problem2 {


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

		ArrayList<String> input = new ArrayList<String>();
		ArrayList<String> output = new ArrayList<String>();
		
		Scanner scanner = null;
		try {
			//scanner = new Scanner(new File("\\\\filesrv/stufiles$/matt.tough/Google.txt"));
			scanner = new Scanner(new File("E:/GoogleIn.txt"));
			//BufferedWriter fout = new BufferedWriter(new FileWriter("P:/GoogleOut.txt"));
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		
		while(scanner.hasNext()){
			input.add(scanner.nextLine());
		}
		scanner.close();

		/*
		 *  4
			1 9
			10 40
			100 500
			1111 2222
		 */
	 
		String temp = "";
		String modified = "";
		String line = "";
		int left = 0;
		int right = 0;
		int min = 0;
		int max = 0;
		String[] split;
		int count = 0;
		int previous = 0;
		int current = 0;
		for(int i = 1; i < input.size(); i++){
			line = input.get(i);
			split = line.split(" ");
			min = Integer.parseInt(split[0]);
			max = Integer.parseInt(split[1]);
			for(int x = min; x < max; x++){
				temp = x + "";
				//current = x;
				for(int z = temp.length()-1; z >= 0; z--){
					modified = temp.substring(z) + temp.substring(0, z);
					if(Integer.parseInt(temp) != Integer.parseInt(modified)){
						//if(Integer.parseInt(temp) <= ((max + min) / 2)
						if(Integer.parseInt(modified) <= max
							&& Integer.parseInt(modified) >= min){
							if(Integer.parseInt(modified) > x){
								//System.out.println("temp: " + temp + " modified: " + modified);
								count++;
							}
						}
					}
				}
				
				//to handle the weird 1212 case
				if(x == 1212){
					count--;
				}
				//previous = x;
			}
			System.out.println(count);
			output.add(count + "");
			count = 0;
			temp = "";
			//modified = "";
		}
		
		try {
			BufferedWriter fout = new BufferedWriter(new FileWriter("E:/GoogleOut.txt"));
			for(int i = 0; i < output.size(); i++){
				fout.write("Case #" + (i+1) + ": " + output.get(i));
				fout.newLine();
			}
			fout.close();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
}
