import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.io.PrintWriter;
import java.util.Scanner;

public class ProblemC {

	public static void main(String[] args) {
		final Scanner in = new Scanner(System.in);
		final PrintWriter out = new PrintWriter(System.out);
		
		final int t = in.nextInt();
		
		for (int tt = 0; tt < t; tt++) {
			final int a = in.nextInt();
			final int b = in.nextInt();
			
			int count = 0;
			for (int n = a; n < b; n++) {
				count += recycledNumbersCount(n, b);
			}
			
			out.println("Case #" + (tt + 1) + ": " + count); 
		}

		out.flush();
	}
	
	private static int recycledNumbersCount(int n, int b) {
		int count = 0;
		final String s = "" + n;
		String ss = s.charAt(s.length() - 1) + s.substring(0, s.length() - 1);
		while (!s.equals(ss)) {
			if (ss.charAt(0) != '0') {
				final int m = Integer.parseInt(ss);
				if (m > n && m <= b) {
					count++;
				}
			}
			ss = ss.charAt(ss.length() - 1) + ss.substring(0, ss.length() - 1);
		}
		return count;
	}

}
