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();
    }
}

package google.gcj.recyclednumbers;

import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Queue;
import java.util.Scanner;
import java.util.Set;

public class RecycledNumbers4 {

	public static void main(String[] args) throws FileNotFoundException {

		RecycledNumbers4 recycledNumbers = new RecycledNumbers4();
		recycledNumbers.doMain();
	}

	private void doMain() throws FileNotFoundException {
		Scanner in = new Scanner(System.in);

		int T = in.nextInt();

		int A, B, m, n, sum;

		for (int zz = 0; zz < T; zz++) {
			A = in.nextInt();
			B = in.nextInt();

			Queue<Integer> queue = new LinkedList<Integer>();
			Set<Integer> nm = new HashSet<Integer>();
			sum = 0;

			for (m = A; m <= B; m++) {
				if (!nm.contains(m)) {
					List<Integer> ml = integerToList(m);
					// new n
					queue.clear();
					for (int i = 0; i < ml.size(); i++) {
						queue.add(ml.get(i));
					}

					for (int j = 0; j < queue.size(); j++) {
						n = integerListToInteger(queue);
						if (A <= n && n < m && m <= B) {
							sum++;
							// System.out.format("Get %d\n", n);

							nm.add(m);
						}
						queue.add(queue.remove());
					}
				}
			}
			System.out.format("Case #%d: %s\n", zz + 1, sum);

		}
	}

	private List<Integer> integerToList(int B) {
		List<Integer> list = new ArrayList<Integer>();
		for (char c : String.valueOf(B).toCharArray()) {
			String s = String.valueOf(c);
			list.add(Integer.valueOf(s));
		}
		return list;
	}

	private int integerListToInteger(Queue<Integer> queue) {
		String s = "";
		for (int l : queue) {
			s += String.valueOf(l);
		}
		return Integer.valueOf(s);
	}

}
