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.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;


public class CodeJamQ3 {

  public static String[] read(final String name) throws IOException {
    final InputStreamReader reader = new FileReader(new File(name));
    final char[] buf = new char[1024];
    int count = 0;
    final StringBuilder res = new StringBuilder();
    do {
      count = reader.read(buf);
      if (count > 0)
      res.append(buf, 0, count);
    } while (count != -1);
    return res.toString().trim().split("(\\r?\\n)+");
  }

  public static void main(final String[] args) throws Exception {
    final long start = System.currentTimeMillis();
    final String[] input = read("C-large.in");
    final FileWriter out = new FileWriter("out");

    final int casesCount = Integer.parseInt(input[0]);
    for (int caseN = 1; caseN <= casesCount; caseN++) {
      final String[] data = input[caseN].split("\\s+");
      final int a = Integer.parseInt(data[0]);
      final int b = Integer.parseInt(data[1]);

      out.write("Case #" + caseN + ": " + solve(a, b) + "\n");

    }

    out.close();
    System.out.println((System.currentTimeMillis() - start));
  }

  private static long solve(final int a, final int b) {
    System.out.print(".");
    long count = 0;
    final HashSet<Tuple> check= new HashSet<Tuple>();
    final char[] number = String.valueOf(b).toCharArray(), test= new char[number.length];
    final char[] numberB = String.valueOf(b).toCharArray();
    for (int x = a; x <= b; x++) {
      final String s = String.valueOf(x);
      s.getChars(0, s.length(), number, 0);
      s.getChars(0, s.length(), test, 0);
      for (int i = 1; i < number.length; i++) {

        final char c = test[0];
        for (int j = 1; j < number.length; j++) {
          test[j - 1] = test[j];
        }
        test[test.length - 1] = c;

        if (number[0] <= number[i] && number[i] != '0') {
          // check the number
          boolean ok = true, larger = false, smaller = false;
          int eq = 0;
          for (int j = 0; j < number.length; j++) {
            if (test[j] == number[j]) { eq++; }
            if (test[j] > number[j]) { larger = true; }
            if (test[j] < numberB[j]) { smaller = true; }
            if (larger && smaller) { break; }
            if (!larger && test[j] < number[j] || !smaller && test[j] > numberB[j]) {
              ok = false;
              break;
            }
          }
          if (!ok || eq == number.length) {continue; }

          final Tuple t = new Tuple(x, Integer.parseInt(new String(test)));
          if (check.contains(t)) { continue; }
          check.add(t);
          ++count;
        }
      }
    }
    return count;
  }

  private static class Tuple {
    int x, y;
    Tuple(final int x, final int y) {this.x = x; this.y = y; }
    @Override
    public int hashCode() {
      return x + y;
    }
    @Override
    public boolean equals(final Object obj) {
      final Tuple t = (Tuple)obj;
      return t.x == x && t.y == y || t.x == y && t.y ==x;
    }
  }

}
