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 solution;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Enumeration;
import java.util.Hashtable;

/**
 *
 * @author 144key (tux_daemon)
 */
public class Main {
    // Problem 3 : Problem C. Recycled Numbers
    public static void recycledNumbers(String fileIn, String fileOut) {
        try {
            FileInputStream fis = new FileInputStream(new File(fileIn));
            FileOutputStream fos = new FileOutputStream(new File(fileOut));
            int chars = 0;
            StringBuffer tmpStrLine = null;
            int nbCase = 0;
            int processedCase = 1;
            int guide = 0;
            while ((chars != -1) && ((nbCase == 0) || (processedCase <= nbCase))) {
                tmpStrLine = new StringBuffer();
                while (((chars = fis.read()) != -1) && (((char) chars) != '\n')) {
                    tmpStrLine.append((char) chars);
                }
                if (guide == 0) { // searching for nbCase
                    nbCase = Integer.parseInt(tmpStrLine.toString());
                    guide = 1;
                } else if (guide == 1) { // process
                    // init
                    //System.out.println("IN : " +tmpStrLine.toString());
                    String[] tmp = tmpStrLine.toString().split("\\s");
                    int bottomLimit = Integer.parseInt(tmp[0]);
                    int topLimit = Integer.parseInt(tmp[1]);
                    int nbRecycledPair = 0;
                    for (int processedNumber = bottomLimit; processedNumber <= topLimit; processedNumber++) {
                        char[] numberElmt = (""+processedNumber).toCharArray();
                        int numberElmtLength = numberElmt.length;
                        if (numberElmtLength > 1) {
                            for (int j = 0; j < (numberElmtLength-1); j++) {
                                char lastElmt = numberElmt[numberElmtLength-1];
                                for (int k = (numberElmtLength-1); k > 0; k--) {
                                    numberElmt[k] = numberElmt[k-1];
                                }
                                numberElmt[0] = lastElmt;
                                int tmpRecycle = Integer.parseInt(String.valueOf(numberElmt, 0, numberElmtLength));
                                if (tmpRecycle > processedNumber && tmpRecycle <= topLimit) {
                                    nbRecycledPair++;
                                }
                            }
                        }
                    }
                    // output result
                    fos.write(("Case #"+processedCase+": "+nbRecycledPair+"\n").getBytes());
                    //System.out.println("Case #"+processedCase+": "+nbRecycledPair);
                    // back to search tmpCredit
                    processedCase++;
                }
            }
            fis.close();
            fos.close();
        } catch (FileNotFoundException e) {
            System.err.println("FileNotFound : " + e);
        } catch (IOException e) {
            System.err.println("IOException : " + e);
        } catch (Exception e) {
            System.err.println("Other Exception : " + e);
        }
    }

    /**
     * @param args the command line arguments
     **/
    public static void main(String[] args) {
        // TODO code application logic here
        recycledNumbers("C-large.in", "C-large.out");
    }
}
