import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class CopyOfCopyOfMain {

	static int ndigits(int n) {
		return (int) (Math.log10(n) + 1);
	}

	static int rot(int n, int dig) {
		return (int) ((n % 10) * Math.pow(10, dig - 1)) + (int) (n / 10);
	}

	public static void main(String[] args) throws FileNotFoundException {
		String file = "C-large";
		Scanner in = new Scanner(new File(file + ".in"));
		PrintWriter out = new PrintWriter(new File(file + ".out"));

		int T = in.nextInt();
		for (int t = 1; t <= T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();

			int c = 0;
			int[] list = new int[ndigits(B)];
			numbers: for (int i = A; i <= B; i++) {
				int digs = ndigits(i);
				int rot = i;
				int pairs = 0;

				Arrays.fill(list, -1);
				list[0] = i;

				digits: for (int j = 1; j <= digs + 1; j++) {

					rot = rot(rot, digs);
					if(rot < i)
						continue;

					if (A <= rot && rot <= B) {
						for (int k = 0; k < j; k++) {
							if (list[k] == rot) {
								continue digits;
							}
						}
						pairs++;
						list[j] = rot;
					}
				}

				//c += pairs * (pairs + 1) / 2;
				c += pairs ;
				// c+=digs;
			}
			out.println("Case #" + t + ": " + c);
		}

		in.close();
		out.close();
	}
}

/*
 * Anand Oza
 * Apr 14, 2012
 */

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

public class C_RecycledNumbers {
	public static void main(String[] args) throws IOException {
		long startTime = System.nanoTime();
		BufferedReader reader = new BufferedReader(new FileReader("C_RecycledNumbers.in"));
		PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("C_RecycledNumbers.out")));
		StreamTokenizer in = new StreamTokenizer(reader);

		in.nextToken();
		int T = (int) in.nval;
		for (int testcase = 1; testcase <= T; testcase++) {
			in.nextToken();
			int A = (int) in.nval;
			in.nextToken();
			int B = (int) in.nval;

			int ans = 0;
			for (int n = A; n <= B; n++) {
				String s = String.valueOf(n);
				Set<Integer> mvalues = new HashSet<Integer>();
				for (int i = 0; i < s.length(); i++) {
					int m = Integer.parseInt(s.substring(i) + s.substring(0, i));
					if (m > n && m <= B && m >= A)
						mvalues.add(m);
				}
				ans += mvalues.size();
			}

			out.format("Case #%d: %d%n", testcase, ans);
		}

		out.close();
		System.out.println("Time (ms): " + (double) (System.nanoTime() - startTime) / 1000000);
		System.exit(0);
	}
}
