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.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class C {

	private void work() throws IOException {

		Scanner sc = new Scanner(new FileReader("C-large.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("C-large.out"));
		Set<Integer> set = new HashSet<Integer>();
		int nc = sc.nextInt();
		for (int tc = 1; tc <= nc; tc++) {
			int a = sc.nextInt();
			int b = sc.nextInt();
			int len = Integer.toString(a).length();
			char[] c = new char[len];
			int res = 0;
			for (int i = a; i <= b; i++) {
				set.clear();
				int t = i;
				for (int j = len - 1; j >= 0; j--) {
					c[j] = (char) (t % 10 + '0');
					t /= 10;
				}
				for (int j = 0; j < len - 1; j++) {
					char tmp = c[len - 1];
					for (int k = len - 1; k > 0; k--) {
						c[k] = c[k - 1];
					}
					c[0] = tmp;
					int blah = Integer.valueOf(new String(c));
					if (blah > i && blah <= b)
						set.add(blah);
				}
				res += set.size();
			}
			pw.printf("Case #%d: %d\n", tc, res);
		}
		pw.close();
	}

	public static void main(String[] args) throws IOException {
		new C().work();
	}

}
