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.FileInputStream;
import java.io.FileWriter;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;

public class C {
	// public final static String IN_FILE = "C.in";
	// public final static String OUT_FILE = "C.out";

	public final static String IN_FILE = "C-small-attempt1.in";
	public final static String OUT_FILE = "C-small-attempt1.out";

	private static Scanner IN;

	public static void main(String[] args) throws Exception {
		InputStream in = new FileInputStream(IN_FILE);
		PrintWriter out = new PrintWriter(new FileWriter(OUT_FILE));
		IN = new Scanner(in);

		int T = IN.nextInt();
		for (int t = 1; t <= T; t++) {
			int n = IN.nextInt();
			int m = IN.nextInt();

			int l = 0;
			int k = 1;
			while (k <= n) {
				k *= 10;
				l++;
			}
			k /= 10;

			int c = 0;
			for (int i = n; i <= m; i++) {
				Set<Integer> p = new TreeSet<Integer>();
				int s = i;
				for (int j = 0; j < l; j++) {
					int r = s / 10 + (s % 10) * k;
					if (r > i && r <= m) {
						p.add(r);
					}
					s = r;
				}
				c += p.size();
			}
			out.println("Case #" + t + ": " + c);
		}

		out.flush();
		out.close();
		in.close();
	}
}
