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.
 */

/**
 *
 * @author ZAMAN
 */
import java.io.*;

public class test2 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
       
        int start;
        int end;
        try {
            BufferedReader a = new BufferedReader(new FileReader("C-large.in"));
            BufferedWriter b = new BufferedWriter(new FileWriter("C-large.out"));
            
            int lines = Integer.valueOf(a.readLine());
            for (int z = 1; z <= lines; z++) {
                 int pairs = 0;
                String ints[] = a.readLine().split(" ");
                start = Integer.parseInt(ints[0]);
                end = Integer.parseInt(ints[1]);
                b.append("Case #" + z + ": ");
                for (int i = start; i <= end; i++) {
                    String number = String.valueOf(i);
                    int length = number.length();
                    int newnums[] = new int[length - 1];
                    int count = 0;
                    if (length == 1) {
                        continue;
                    }
                    if (length == 2) {

                        char ch1 = number.charAt(0);
                        char ch2 = number.charAt(1);
                        if (ch1 < ch2) {
                            String num = "";
                            //interchange
                            num += ch2 + "" + ch1;
                            int newnum = Integer.parseInt(num);

                            if (newnum <= end) {
                                pairs++;
                            }
                        }
                    }
                    if (length > 2) {
                        
                        //mving one character to the front
                        String num = "";
                        char ch = number.charAt(length - 1);
                        num += ch;
                        num += number.substring(0, length - 1);
                        int newnum = Integer.parseInt(num);
                        if (newnum > i && newnum <= end) {
                            if (count == 0) {
                                newnums[count] = newnum;
                                count++;
                                pairs++;
                            } else {
                                int k = 0;
                                for (; k < length - 1; k++) {
                                    if (newnums[k] == newnum) {
                                        break;
                                    }
                                }
                                if (k == length - 1) {
                                    pairs++;
                                }
                            }

                        }

                        for (int j = length - 2; j > 0; j--) {
                            //moving more than once
                            String mov = number.substring(j, length);
                            num = "";
                            num += mov;
                            num += number.substring(0, j);
                            newnum = Integer.parseInt(num);

                            if (newnum > i && newnum <= end) {
                                if (count == 0) {
                                    newnums[count] = newnum;
                                    count++;
                                    pairs++;
                                } else {
                                    int k = 0;
                                    for (; k < length - 1; k++) {
                                        if (newnums[k] == newnum) {
                                            break;
                                        }
                                    }
                                    if (k == length - 1) {
                                        pairs++;
                                    }
                                }
                            }


                        }
                    }


                }
                
                b.append("" + pairs);
                b.newLine();
            }

            b.flush();
            a.close();
            b.close();

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