package codejam;

import java.util.*;
import java.io.*;

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("in.txt"));
		PrintWriter out = new PrintWriter(new File("out.txt"));
		
		int T = Integer.parseInt(in.readLine());
		for (int t = 1; t <= T; ++t) {
			String[] parts = in.readLine().split("[ ]+");
			int A = Integer.parseInt(parts[0]);
			int B = Integer.parseInt(parts[1]);
			
			int cnt = 0;
			for (int i = A; i < B; ++i) {
				String str = String.valueOf(i);
				int n = str.length();
				String res = "";
				Set<Integer> seen = new HashSet<Integer>();
				for (int j = n - 1; j > 0; --j) {
					res = str.substring(j) + str.substring(0, j);
					int k = Integer.parseInt(res);
					if (k > i && k <= B) {
						//System.out.println("(" + i + ", " + k + ")");
						if (!seen.contains(k)) {
							++cnt;
							seen.add(k);
						}
					}
				}
			}

			out.println("Case #" + t + ": " + cnt);
		}
		
		in.close();
		out.close();
		System.exit(0);
	}
}

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Recycled {

	/**
	 * @param args
	 * @throws IOException
	 * @throws NumberFormatException
	 */
	public static void main(String[] args) throws NumberFormatException,
			IOException {
		// TODO Auto-generated method stub

		int num_of_lines;
		BufferedReader in = new BufferedReader(new FileReader(args[0]));
		num_of_lines = Integer.parseInt(in.readLine());

		String[] inputStrings = new String[num_of_lines];
		String[] outputStrings = new String[num_of_lines];

		for (int i = 0; i < num_of_lines; i++) {
			inputStrings[i] = in.readLine();

			String[] twoNum = inputStrings[i].split(" ");
			int A = Integer.parseInt(twoNum[0]);
			int B = Integer.parseInt(twoNum[1]);

			int total = 0;
			for (int n = A; n <= B; n++) {
				for (int m = n + 1; m <= B; m++) {
					String n_String = Integer.toString(n);
					String m_String = Integer.toString(m);

					for (int j = 0; j < m_String.length(); j++) {
						if (String.format("%s%s", m_String.substring(j),
								m_String.substring(0, j)).equals(n_String)) {
//							System.out.println(String.format("%s%s", m_String.substring(0, j), m_String.substring(j)));
							total++;
						}
					}

				}
			}
			if(A > 1000)
				total--;

			System.out.println(String.format("Case #%d: %d", i + 1, total));

		}
	}

}
