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.IOException;
import java.io.InputStreamReader;
import java.util.LinkedList;
import java.util.Scanner;

public class leadingZero {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		BufferedReader read = new BufferedReader(new InputStreamReader(
				System.in));
		String ll;
		ll = read.readLine();
		int a = Integer.parseInt(ll);
		for (int k = 0; k < a; k++) {
			Scanner scn=new Scanner(read.readLine());
			int A = scn.nextInt();
			int B = scn.nextInt();
			
			int[] s = new int[20000000];
			for (int i = A; i <= B; i++) {
				String r = i + "";
				int l = i;
				LinkedList<Integer>list=new LinkedList<Integer>();
				
				for (int j = 0; j < r.length() - 1; j++) {
					int b = l % 10;
					l = l / 10 + (int) Math.pow(10, r.length() - 1) * b;
					if (l > i && !list.contains(l))
					{
						s[l]++;
						list.add(l);
					}
				}
			}
			int sum = 0;
			for (int i = A; i <= B; i++) {
				if (s[i] > 0) {
					sum += s[i];
					//System.out.println(i+"  ..  "+s[i]);
				}
			}
			System.out.println("Case #"+(k+1)+": "+sum);
		}
	}

}
