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.util.Scanner;


public class C {
	String cycle(String s) {
		return s.substring(1) + s.charAt(0);
	}

	void run() {
		Scanner in = new Scanner(System.in);
		int T = in.nextInt();
		for (int t=1; t<=T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();
			long res = 0;
			for (long i=A; i<=B; i++) {
				long cnt = 1;
				String str = String.valueOf(i);
				for (String nowstr = cycle(new String(str));
						!nowstr.equals(str); nowstr = cycle(nowstr)) {
					if (nowstr.charAt(0) != 0) {
						int nowint = Integer.parseInt(nowstr);
						if (nowint >= A && nowint <= B) {
							if (nowint < i) {
								cnt = 0;
								break;
							} else {
								cnt++;
							}
						}
					}
				}
				res += cnt*(cnt-1)/2;
			}
			System.out.println("Case #" + t + ": " + res);
		}
	}

	static public void main(String[] args) {
		C obj = new C();
		obj.run();
	}
}
