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.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class Task3 {
	private int parseLine(Scanner scanner) throws IOException {
		int A = scanner.nextInt();
		int B = scanner.nextInt();
		int c = ("" + A).length();
		int pow = (int) Math.pow(10, c - 1);
		int count = 0;
		for (int m = A; m < B; m++) {
			int tmpN = m;
			Set<Integer> set = new HashSet<Integer>();
			for (int j = 0; j < c - 1; j++) {
				tmpN = tmpN / 10 + (tmpN % 10) * pow;
				if (m < tmpN && tmpN <= B && !set.contains(tmpN)) {
					set.add(tmpN);
					count++;
				}
			}
		}
		return count;
	}
	
	public void run(Scanner scanner, Writer bw) throws IOException {
		int rowCnt = scanner.nextInt();
		for (int i = 0; i < rowCnt; i++) {
			bw.write("Case #" + (i + 1) + ": " + parseLine(scanner) + '\n');
		}
		bw.flush();
		bw.close();
	}
	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			Scanner scanner = new Scanner(System.in);
			scanner.useDelimiter(" |\r\n|\n|\r");
			new Task3().run(new Scanner(System.in),
					new OutputStreamWriter(System.out));
		} catch (IOException e) {
			return;
		}
	}
}
