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.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class CodeJam {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		try {
			int testCaseCount = scanner.nextInt();
			for (int i = 0; i < testCaseCount; i++) {
				int A = scanner.nextInt();
				int B = scanner.nextInt();

				int counter = 0;

				Set<String> pairs = new HashSet<String>();
				for (int n = A; n < B; n++) {
					String startString = String.valueOf(n);
					for (int k = 1; k < startString.length(); k++) {
						int startPos = startString.length() - k;
						if (startString.charAt(startPos) == '0') {
							continue;
						}

						StringBuilder sb = new StringBuilder(startString);
						char[] chars = new char[k];
						sb.getChars(startPos, startString.length(), chars, 0);
						sb.delete(startPos, startString.length());
						sb.insert(0, chars);

						int m = Integer.valueOf(sb.toString());
						if (n < m && m <= B) {
							pairs.add(String.format("%d %d", n, m));
						}
					}
				}

				System.out.println(String.format("Case #%d: %d", i + 1, pairs.size()));
			}
		} finally {
			scanner.close();
		}
	}

}
