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

public class C {

	private void work() throws IOException {

		Scanner sc = new Scanner(new FileReader("C-small-attempt0.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("C-small-attempt0.out"));
		Set<Integer> set = new HashSet<Integer>();
		int nc = sc.nextInt();
		for (int tc = 1; tc <= nc; tc++) {
			int a = sc.nextInt();
			int b = sc.nextInt();
			int len = Integer.toString(a).length();
			char[] c = new char[len];
			int res = 0;
			for (int i = a; i <= b; i++) {
				set.clear();
				int t = i;
				for (int j = len - 1; j >= 0; j--) {
					c[j] = (char) (t % 10 + '0');
					t /= 10;
				}
				for (int j = 0; j < len - 1; j++) {
					char tmp = c[len - 1];
					for (int k = len - 1; k > 0; k--) {
						c[k] = c[k - 1];
					}
					c[0] = tmp;
					int blah = Integer.valueOf(new String(c));
					if (blah > i && blah <= b)
						set.add(blah);
				}
				res += set.size();
			}
			pw.printf("Case #%d: %d\n", tc, res);
		}
		pw.close();
	}

	public static void main(String[] args) throws IOException {
		new C().work();
	}

}
