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.awt.Point;
import java.io.File;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class C {
	public static Set<Point> set;

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(new File("input.in"));
		int n, a, b;
		int ans;
		n = in.nextInt();

		for (int tc = 1; tc <= n; tc++) {
			a = in.nextInt();
			b = in.nextInt();
			set = new HashSet<Point>();
			ans = finder(a, b) / 2;
			System.out.println("Case #" + tc + ": " + set.size() / 2);
			// System.out.println();
		}

	}

	public static int finder(int a, int b) {
		int temp;
		int ans = 0;
		for (int i = a; i <= b; i++) {
			for (int j = 1;; j++) {
				temp = moveDigits(i, j);
				if (temp == -1)
					break;
				if (temp != i && temp >= a && temp <= b) {
					// System.out.println("Output :" + i + "  " + temp);
					set.add(new Point(i, temp));
					ans++;
				}
			}

		}
		return ans;
	}

	public static int moveDigits(int num, int moveBy) {
		String s = Integer.toString(num);
		int size = s.length();
		if (moveBy >= s.length())
			return -1;
		s = s.substring(moveBy) + s.substring(0, moveBy);
		if (Integer.toString((Integer.parseInt(s))).length() != size)
			return 0;
		return Integer.parseInt(s);
	}

}
