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.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;


public class Main {
	
	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(new FileReader("input.txt"));
		PrintWriter pw = new PrintWriter(new FileWriter("output.txt"));
		int tn = sc.nextInt();
		sc.nextLine();
		for(int i = 0; i < tn; i++) {
			int a = sc.nextInt();
			int b = sc.nextInt();
			int res = 0;
			for(int t = a; t <= b; t++) {
				String oppa = t + "";
				int len = (t + "").length();
				for (int u = 0; u + 1 < len; u++) {
					if(oppa.charAt(u + 1) != '0') {
						int v = Integer.parseInt(oppa.substring(u + 1, len) + oppa.substring(0, u + 1));
						if (t == v)
							break;
						if (a <= v && v <= b) {
							res++;
						}
					}
				}
			}
			pw.print("Case #" + (i + 1) + ": " + (res / 2));
			pw.println();
		}
		pw.close();
	}
}
