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();
	}
}

package fun.codeslam.recycling;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;

public class Main
{
	/**
	 * @param args
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException
	{
		BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

		Integer testCaseCount = Integer.parseInt(reader.readLine());

		for (Integer testCaseNumber = 1; testCaseNumber <= testCaseCount; testCaseNumber++)
		{
			String[] elements = reader.readLine().split(" ");
			System.out.append("Case #" + testCaseNumber + ": ");
			System.out.append(numberOfReyclingsInRange(Integer.parseInt(elements[0]), Integer.parseInt(elements[1]))
					.toString());
			System.out.append('\n');
		}
	}

	private static Integer numberOfReyclingsInRange(Integer min, Integer max)
	{
		Integer numberOfReyclings = 0;
		for (Integer number = min; number <= max; number++)
		{
			numberOfReyclings += numberOfReyclings(number, max);
		}
		return numberOfReyclings;
	}

	private static Integer numberOfReyclings(Integer number, Integer max)
	{
		Map<Integer, Boolean> isset = new HashMap<Integer, Boolean>();

		Integer numberOfReyclings = 0;
		Integer length = number.toString().length();

		for (Integer beginIndex = 1; beginIndex < length; beginIndex++)
		{
			String endPart = number.toString().substring(beginIndex);
			String frontPart = number.toString().substring(0, beginIndex);
			Integer newNumber = Integer.parseInt(endPart + frontPart);

			if (newNumber.toString().length() == number.toString().length() && number < newNumber && newNumber <= max
					&& isset.get(newNumber) == null)
			{
				isset.put(newNumber, true);
				numberOfReyclings++;
			}
		}

		return numberOfReyclings;
	}
}
