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.*;
import java.io.*;

import static java.lang.Math.*;

public class Main {

	BufferedReader in;
	StringTokenizer st;
	PrintWriter out;

	private String inFilename = "in.txt";
	private String outFilename = "out.txt";

	boolean can(int a, int b) {
		String s1 = String.valueOf(a);
		String s2 = String.valueOf(b);
		if (s1.length() != s2.length())
			return false;
		for (int i = 1; i < s1.length(); ++i) {
			String q = s1.substring(i) + s1.substring(0, i);
			if (q.equals(s2))
				return true;
		}
		return false;
	}

	void solve() throws IOException {
		int n = ni();
		for (int t = 1; t <= n; ++t) {
			int a = ni();
			int b = ni();
			int ret = 0;
			for (int i = a; i <= b; ++i)
				for (int j = i + 1; j <= b; ++j) {
					if (can(i, j))
						++ret;
				}
			out.println("Case #" + t + ": " + ret);
		}
	}

	public Main() throws IOException {
		Locale.setDefault(Locale.US);
		in = new BufferedReader(new FileReader(inFilename));
		out = new PrintWriter(outFilename);
		solve();
		in.close();
		out.close();
	}

	String ns() throws IOException {
		while (st == null || !st.hasMoreTokens())
			st = new StringTokenizer(in.readLine());
		return st.nextToken();
	}

	int ni() throws IOException {
		return Integer.valueOf(ns());
	}

	double nd() throws IOException {
		return Double.valueOf(ns());
	}

	long nl() throws IOException {
		return Long.valueOf(ns());
	}

	public static void main(String[] args) throws IOException {
		new Main();
	}
}
