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.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;

public class C {

	public void solve() throws FileNotFoundException {
		Scanner in = new Scanner(new File("C-small-attempt0.in"));
		PrintWriter out = new PrintWriter("C-small-attempt0.out");

		int testN = in.nextInt();

		for (int i = 1; i <= testN; i++) {
			out.print("Case #" + i + ": ");
			int a = in.nextInt();
			int b = in.nextInt();
			int recycled = 0;
			StringBuilder sb;

			if (b > 9) {
				for (int x = a; x <= b; x++) {
					sb = new StringBuilder(Integer.toString(x));

					for (int y = 0; y < sb.length() - 1; y++) {
						int v = backToFront(sb);

						recycled += isRecycled(v, x, b);
					}

				}

			}
			out.println(recycled);
		}

		in.close();
		out.close();

	}

	public int backToFront(StringBuilder sb) {

		char c = sb.charAt(sb.length() - 1);

		sb.deleteCharAt(sb.length() - 1);

		sb.insert(0, c);

		int x = Integer.parseInt(sb.toString());

		return x;
	}

	public int isRecycled(int v, int x, int b) {
		int r = 0;

		if (v > x && v <= b)
			for (int i = x; i <= b; i++) {
				if (v == i) {
					r++;
				}
			}

		return r;
	}

	public static void main(String[] args) throws FileNotFoundException {
		new C().solve();
	}
}
