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.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;


public class ProblemUtils {

	public static String[] readInput(String path) throws Exception {
		FileInputStream in = new FileInputStream(path);
		BufferedReader reader = new BufferedReader(new InputStreamReader(in));
		int nlines = Integer.parseInt(reader.readLine());
		String[] lines = new String[nlines];
		for (int i = 0; i < nlines; i++) {
			lines[i] = reader.readLine();
		}
		return lines;
	}
	
	public static void writeOutput(String path, String[] lines) throws Exception {
		FileOutputStream out = new FileOutputStream(path);
		BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(out));
		for (int i = 0; i < lines.length; i++) {
			writer.write("Case #" + (i + 1) + ": " + lines[i]);
			if (i + 1 < lines.length) {
				writer.write("\n");
			}
		}
		writer.flush();
		out.close();
	}
	
}
