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 problemC;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class ProblemC {
	public static void main(String[] args) throws FileNotFoundException {
		// Scanner sc = new Scanner(new File("C-practice.in"));
		// Scanner sc = new Scanner(new File("C-small.in"));
		Scanner sc = new Scanner(new File("C-large.in"));
		int cases = sc.nextInt();
		for (int i = 1; i <= cases; i++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			long count = 0;
			for (int j = A; j <= B; j++) {
				int number = recycle(j);
				while (number != j) {
					if (number > j && number <= B) {
						count++;
					}
					number = recycle(number);
				}
			}
			// do case things here
			System.out.format("Case #%d: %d\n", i, count);
		}
	}

	private static int recycle(int n) {
		int temp = n;
		int max = 1;
		while (temp >= 10) {
			max *= 10;
			temp /= 10;
		}
		int m = n / 10 + (max * (n % 10));
		temp = n;
		while (temp % 10 == 0) {
			temp = m;
			m = m / 10 + (max * (m % 10));
		}
		return m;
	}
}
