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.Scanner;


public class RecycledNumbers {
	
	static int recycle(int n, int B) {
		String nString = String.valueOf(n);
		
		int out = 0;

		for (int i = 0; i < nString.length(); i++) {
			int cut = nString.length() - (i + 1);
			String temp = nString.substring(cut) + nString.substring(0, cut);
			
			int pair = Integer.parseInt(temp);
				
			if (n < pair && pair <= B) {
				//System.out.println(n + " " + pair);
				out++;
			}
		}
		
		return out;
	}
	
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int cases = sc.nextInt();
		
		StringBuilder out = new StringBuilder();
		for (int i = 1; i <= cases; i++) {
			int A = sc.nextInt();
			int B = sc.nextInt();

			int pairs = 0;
			
			for (int j = A; j < B; j++) {
				pairs += recycle(j, B);
			}
			
			out.append("Case #" + i + ": " + pairs + "\n");
		}
		
		System.out.print(out);
	}
}
