package fixjava;

public class StringUtils {

	/** Repeat the given string the requested number of times. */
	public static String repeat(String str, int numTimes) {
		StringBuilder buf = new StringBuilder(Math.max(0, str.length() * numTimes));
		for (int i = 0; i < numTimes; i++)
			buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the left hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padLeft(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(padChar);
		for (int i = 1, mi = bufSize - str.length(); i < mi; i++)
			buf.append(padChar);
		buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the right hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padRight(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(str);
		buf.append(padChar);
		while (buf.length() < bufSize)
			buf.append(padChar);
		return buf.toString();
	}

	/** Intern all strings in an array, skipping null elements. */
	public static String[] intern(String[] arr) {
		for (int i = 0; i < arr.length; i++)
			arr[i] = arr[i].intern();
		return arr;
	}

	/** Intern a string, ignoring null */
	public static String intern(String str) {
		return str == null ? null : str.intern();
	}

}

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class C {

	public static void main(String[] args) {
		try {
			// so eclipse can read file from system in
			System.setIn(new FileInputStream(new File("large.in")));
		} catch (IOException e) {
			e.printStackTrace();
			System.exit(1);
		}
		Scanner scanner = new Scanner(System.in);
		long T = scanner.nextLong();
		scanner.nextLine();
		for (int i = 0; i < T; i++) {
			long A = scanner.nextLong();
			long B = scanner.nextLong();
			long count = 0;
			for (long number = A; number <= B; number++) {
				String numberS = String.valueOf(number);
				Set<String> newNumbers = new HashSet<String>();
				for (int k = 1; k < numberS.length(); k++) {
					String newNumberS = numberS.substring(numberS.length() - k) + numberS.substring(0, numberS.length() - k);
					if (newNumbers.contains(newNumberS)) {
						continue;
					}
					newNumbers.add(newNumberS);
					long newNumber = Long.parseLong(newNumberS);
					if (newNumber != number && newNumber > number && newNumber >= A && newNumber <= B) {
						count++;
					}
				}
			}
			System.out.printf("Case #%d: %d%n", i + 1, count);
		}
	}
}
