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


public class C {
	public static void main(String[] args) {
		try {
			int num;
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			String str = null;
			str = br.readLine();
			num = Integer.parseInt(str);
			for (int i = 0; i < num; i++) {
				String s = br.readLine();
				String arr[] = s.split("\\s+");
				int num1 = Integer.parseInt(arr[0]);
				int num2 = Integer.parseInt(arr[1]);
				int count = 0;
				for (int j = num1; j <= num2; j++) {
					String originalStr = "" + j;
					String numStr = originalStr;
					do {
						numStr = numStr.substring(1) + numStr.charAt(0);
						if (numStr.compareTo(originalStr) > 0) {
							if (Integer.parseInt(numStr) <= num2)
							count++;
						}
					} while (!numStr.equals(originalStr));
				}
				System.out.println("Case #" + (i+1) + ": " + count);
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}	