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 googlecodejam;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 *
 * @author Wouter
 */
public class RecycledNumbers {

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

    public RecycledNumbers() {


        try {
            // Setup in/out
            System.setIn(new FileInputStream("C:\\GCJ\\C-large.in"));
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            BufferedWriter bw = new BufferedWriter(new FileWriter("C:\\GCJ\\C-large.out"));
            bw.flush();



            int untill = Integer.parseInt(br.readLine());

            for (int x = 1; x <= untill; x++) {
                int ans = 0;
                String[] s = br.readLine().split(" ");
                int a = Integer.parseInt(s[0]);
                int b = Integer.parseInt(s[1]);

                for (int z = a; z <= b; z++) {
                    List<Integer> ints = getAllRecycledPairsOf(z);
                    removeDups(ints);
                    Collections.sort(ints);

                    for (Integer nr : ints) {
                        if (between(nr, a, b)) {
                            ans++;
                        } else if (nr > b) {
                            break;
                        }
                    }
                }

                String out = "Case #" + x + ": " + ans;

                cases.add(out);

            }

            for (String s : cases) {
                System.out.println(s);
                bw.write(s);
                bw.flush();
                bw.newLine();
            }

        } catch (IOException ex) {
            System.out.println("SOMETHING WENT WRONG");
        }

    }

    public List<Integer> getAllRecycledPairsOf(int nr) {
        List<Integer> ints = new ArrayList<Integer>();

        StringBuilder s = new StringBuilder();
        s.append(nr);

        String start = s.toString();

        for (int x = 1; x < start.length(); x++) {
            s = new StringBuilder();
            String back = start.substring(start.length() - x, start.length());
            String front = start.substring(0, start.length() - x);
            s.append(back).append(front);
            if (!back.startsWith("0")) {
                Integer newNr = new Integer(s.toString());
                if (newNr > nr) {
                    ints.add(newNr);
                }
            }
        }

        return ints;
    }

    public static void main(String[] args) {
        RecycledNumbers test = new RecycledNumbers();
    }

    public boolean between(int nr, int a, int b) {
        if (nr >= a && nr <= b) {
            //System.out.println(nr);
            return true;
        }
        return false;
    }

    public static void removeDups(List<Integer> list) {
        Set<Integer> s = new HashSet<Integer>(list);
        list.clear();
        list.addAll(s);
    }
}
