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();
    }
}

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

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.StringTokenizer;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author kay
 */
public class Arrange {

    private int first;
    private int last;
    private BufferedReader reader;
    private StringTokenizer token;

    public void do_processing(String filename) {
        String current_line;
        int no_of_cases;
        try {
            reader = new BufferedReader(new FileReader(filename));
            FileWriter fstream = new FileWriter("G:/cl_out.txt");
            BufferedWriter out = new BufferedWriter(fstream);
            no_of_cases = Integer.parseInt(reader.readLine());

            for (int i = 1; i <= no_of_cases; i++) {
                current_line = reader.readLine();
                out.write("Case #" + i + ": ");
                out.write(String.valueOf(do_arrange(current_line)));
                //out.write(String.valueOf(3));
                //System.out.println("outputttttttttttttttt " + do_arrange(current_line));
                out.newLine();
                //Close the output stream
            }
            out.close();
            reader.close();
        } catch (Exception ex) {
            Logger.getLogger(Arrange.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public int do_arrange(String line) {
        int output = 0, temp,temp2, tens = 1, no_of_digits = 0, new_num = 0, mod = 1, add_tens = 1;
        token = new StringTokenizer(line);
        first = Integer.parseInt(token.nextToken());
        last = Integer.parseInt(token.nextToken());
        System.out.println(first + "" +last);
        temp = first;
        while (temp > 0) {
            temp /= 10;
            no_of_digits++;
        }
        
        if (no_of_digits == 1) {
            output = 0;
        } else {
           
            for (int i = first; i <= last; i++){
                temp = i;
                tens = 1;
                add_tens = 1;
                
                for (int j = 1; j < no_of_digits; j++){
                    add_tens = 1;
                    temp = i;
                    temp2 = i;
                    temp2 /= (tens * 10);
                    temp %= (tens * 10);
                    //System.out.println(temp);
                    for (int k=1; k<=(no_of_digits - j); k++){
                        add_tens *= 10;
                    }
                    //System.out.println("add tens" + add_tens);
                    tens *=10;
                    
                    new_num = (temp * add_tens) + temp2;
                    //System.out.println("newwwwwwwww " + new_num);
                    
                    //System.out.println("iiiiiiii "+ i);
                    if((new_num >= first) && (new_num > i) && (new_num <= last)){
                     //System.out.println("adddedd outtput");
                     output++;
                     
                 }
                }
                
                 
                
            }
        }
        System.out.println("output   " + output);
        return output;
    }
}
