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.BufferedWriter;
import java.io.FileInputStream;
//import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

//import java.util.Scanner;

public class C {

	/**
	 * @param args
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException {
		BufferedReader read = new BufferedReader(new InputStreamReader(
				new FileInputStream(
						"C:/Users/Ortiga/Downloads/C-small-attempt0.in")));
		byte length = Byte.parseByte(read.readLine());

		BufferedWriter write = new BufferedWriter(new OutputStreamWriter(
				new FileOutputStream("C:/Users/Ortiga/Downloads/outputC.txt")));
		for (int i = 0; i < length; i++) {
			String[] line = read.readLine().split(" ");
			int a = Integer.parseInt(line[0]), b = Integer.parseInt(line[1]), pairs = 0;
			String rit = "Case #" + (i + 1) + ": ";
			for (int j = a; j <= b; j++) {
				String cur = j + "";
				for (int k = 1; k < line[0].length(); k++) {
					int a1 = Integer.parseInt(cur.substring(k)
							+ cur.substring(0, k));
					if (a1 > j && a1 <= b)
						pairs++;
				}
			}
			rit += pairs;
			write.write(rit);
			if (i < length - 1)
				write.newLine();
		}
		read.close();
		write.close();
	}
}