import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

package codejam;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class RecycledNumbers {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception {

		String fileName = "RecycledNumbers.large.txt";
		System.setIn(new FileInputStream("data/input/" + fileName));
		System.setOut(new PrintStream(new FileOutputStream("data/output/"
				+ fileName)));
		
		Scanner scanner = new Scanner(System.in);
		int testCases = scanner.nextInt();
		for (int i = 1; i <= testCases; i++) {
			Set<String> result = new HashSet<String>();
			int a = scanner.nextInt();
			int b = scanner.nextInt();
			for (int j = a; j <= b; j++) {
				String n = String.valueOf(j);
				if (n.length() > 0) {
					for (int x = n.length() - 1; x > 0; x--) {
						String m = n.substring(x) + n.substring(0, x);
						if (!m.startsWith("0") && Integer.valueOf(n) >= a
								&& Integer.valueOf(n) < Integer.valueOf(m)
								&& Integer.parseInt(m) <= b) {
							result.add(n + "," + m);
						}
						// System.out.println(n + "," + m + "_countOfResult:"
						// + result.size());
					}
				}
			}
			System.out.println("Case #" + i + ": " + result.size());
		}

	}

}
