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.util.*;
import java.io.*;
import static java.lang.Math.*;

public class ProblemC {

	static int numLength(int x)
	{
		int ans = 0;
		while (x > 0)
		{
			ans ++;
			x /= 10;
		}
		return ans;
	}
	
	public static void main(String[] args) throws FileNotFoundException {
		Scanner fin = new Scanner(new File("C.txt"));
		PrintStream fout = new PrintStream("C.ans");
		int caseN = fin.nextInt();
		for (int caseI = 1; caseI <= caseN; caseI++)
		{
			int A = fin.nextInt();
			int B = fin.nextInt();
			int ans = 0;
			for (int n = max(A, 12); n < B; n++)
			{
				String front = Integer.valueOf(n / 10).toString();
				String back = Integer.valueOf(n % 10).toString();
				Set<Integer> appeared = new HashSet<Integer>();
				while (front.length() != 0)
				{
					if (back.charAt(0) != '0')
					{
						int m = Integer.valueOf(back + front);
						if (m > n && m <= B && !appeared.contains(m))
						{
							ans++;
							appeared.add(m);
							//fout.println(n + " " + m);
						}
					}
					back = front.charAt(front.length() - 1) + back;
					front = front.substring(0, front.length() - 1);
				}
			}
			fout.println("Case #" + caseI + ": " + ans);
		}
	}

}
