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.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;


public class ProblemC {

//	private static String inputFile = "input.txt";
	private static String inputFile = "C-small-attempt0.in";

	public static void main(String[] args) throws IOException {
	    BufferedReader input = null;
		try {
			input =  new BufferedReader(new FileReader(inputFile));

			String line = null;

			int numOfTestCases = 0;
			if ((line = input.readLine()) != null) {
				numOfTestCases = Integer.parseInt(line.trim());
			}

			for (int i = 1; i <= numOfTestCases; i++) {
				if ((line = input.readLine()) != null) {
					String ab = line;
					String[] ab_array = ab.split(" ");
					int a = Integer.parseInt(ab_array[0]);
					int b = Integer.parseInt(ab_array[1]);

					if (a<10 && b<10) {
						System.out.println("Case #" + i + ": 0");
					} else {
						Set<String> recycled = new HashSet<String>();

						if (a < 10) {
							a = 10;
						}
						for (int n=a; n<b; n++) {
							String n_string = "" + n;
							int length = n_string.length();
							for (int j=1; j<length; j++) {
								String m_string = n_string.substring(j) + n_string.substring(0, j);
								int m = Integer.parseInt(m_string);
								if (m>n && m<=b) {
									recycled.add(n_string + ", " + m_string);
								}
							}
						}
						System.out.println("Case #" + i + ": " + recycled.size());
					}
				} else {
					System.out.println("ERROR: Could not read the test case #" + i);
				}
			}
		} catch (FileNotFoundException e) {
			System.out.println("ERROR: FileNotFoundException for the input file.");
			e.printStackTrace();
		} finally {
	        input.close();
		}
	}

}
