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();
		}
	}
}

import java.io.File;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Locale;
import java.util.Scanner;
import java.util.Set;

public class C {

	final static String PREFIX = "C:\\codejam\\C";
//	final static String FILE_NAME = PREFIX + "-test";
//	 final static String FILE_NAME = PREFIX + "-small-attempt0";
	 final static String FILE_NAME = PREFIX + "-large";

	private Scanner in;
	private PrintWriter out;

	public static void main(String[] args) throws Exception {
		Locale.setDefault(Locale.US);
		new C().solveAll();
	}

	private void solveAll() throws Exception {
		in = new Scanner(new File(FILE_NAME + ".in"));
		out = new PrintWriter(new File(FILE_NAME + ".out"));
		int tcn = in.nextInt();
		for (int tc = 1; tc <= tcn; tc++) {
			solve(tc);
		}
		out.close();
	}

	private void solve(int tc) {
		int a = in.nextInt();
		int b = in.nextInt();

		long res = 0;
		for (int i = a; i <= b; i++) {
			String is = String.valueOf(i);
			Set<Integer> set = new HashSet<Integer>();
			for (int j = 1; j < is.length(); j++) {
				String x = is.substring(j) + is.substring(0, j);
				if (x.startsWith("0")) {
					continue;
				}
				int c = Integer.parseInt(x);
				if (c > i && c <= b) {
					set.add(c);
				}
			}
			res += set.size();
		}

		out.format("Case #%d: %s\n", tc, res);
		System.out.format("Case #%d: %s\n", tc, res);
	}
}
