package codejam;

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

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("in.txt"));
		PrintWriter out = new PrintWriter(new File("out.txt"));
		
		int T = Integer.parseInt(in.readLine());
		for (int t = 1; t <= T; ++t) {
			String[] parts = in.readLine().split("[ ]+");
			int A = Integer.parseInt(parts[0]);
			int B = Integer.parseInt(parts[1]);
			
			int cnt = 0;
			for (int i = A; i < B; ++i) {
				String str = String.valueOf(i);
				int n = str.length();
				String res = "";
				Set<Integer> seen = new HashSet<Integer>();
				for (int j = n - 1; j > 0; --j) {
					res = str.substring(j) + str.substring(0, j);
					int k = Integer.parseInt(res);
					if (k > i && k <= B) {
						//System.out.println("(" + i + ", " + k + ")");
						if (!seen.contains(k)) {
							++cnt;
							seen.add(k);
						}
					}
				}
			}

			out.println("Case #" + t + ": " + cnt);
		}
		
		in.close();
		out.close();
		System.exit(0);
	}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;

public class Tools<T>
{

	public static ArrayList<String[]> getInput(String filename) throws IOException
	{
		BufferedReader br = new BufferedReader(new FileReader(filename));

		ArrayList<String[]> output = new ArrayList<String[]>();

		String line;
		while ((line = br.readLine()) != null)
			output.add(line.split(" "));

		br.close();
		return output;
	}
	
	public static ArrayList<String> getInputSingle(String filename) throws IOException
	{
		BufferedReader br = new BufferedReader(new FileReader(filename));

		ArrayList<String> output = new ArrayList<String>();

		String line;
		while ((line = br.readLine()) != null)
			output.add(line);

		br.close();
		return output;
	}

	public static void saveOutput(String filename, ArrayList<String[]> output) throws IOException
	{
		BufferedWriter bw = new BufferedWriter(new FileWriter(filename));
		
		for(int i=0; i<output.size();i++)
		{
			if(i!=0) bw.newLine();
			for(int j=0;j<output.get(i).length;j++)
			{
				if(j!=0) bw.write(" ");
				bw.write(output.get(i)[j]);				
			}
		}
		
		bw.close();
	}
	
	public static void saveOutputSingle(String filename, ArrayList<String> output) throws IOException
	{
		BufferedWriter bw = new BufferedWriter(new FileWriter(filename));
		
		for(int i=0; i<output.size();i++)
		{
			if(i!=0) bw.newLine();
			bw.write(output.get(i));	
		}
		
		bw.close();
	}
}
