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.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;


public class RecycledNumbers {

	public static void main(String[] args) throws IOException {

		Scanner sc = new Scanner(new FileReader("C-small-attempt0.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("outputC1.txt"));

		int caseCount = sc.nextInt();
		sc.nextLine();

		int a, b, count, c, k, l;
		for (int caseNum = 0; caseNum < caseCount; caseNum++) {

			a = sc.nextInt();
			b = sc.nextInt();

			count = 0;
			for (int i = a; i <= b; i++) {

				k = 10;
				l = (int) Math.pow(10, (int) Math.log10(i));
				HashSet<Integer> pairs = new HashSet<Integer>();
				while (k < i) {
					c = (i % k)*l + i/k;

					if (i < c && c <= b) {
						pairs.add(c);
					}

					k *= 10;
					l /= 10;
				}
				count += pairs.size();
			}

			pw.write("Case #" + (caseNum + 1) + ": ");
			pw.write(count + "\n");
		}

		pw.flush();
		pw.close();
		sc.close();
	}
}
