package qual;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		new RecycledNumbers().run();

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.PrintWriter;

public class RecycledNumbers {

	public RecycledNumbers() {
		solve();
	}

	/**
	 * Solves Problem A. Speaking in Tongues
	 */
	private void solve() {
		try {
			File f = new File("./C-small-attempt0.in.txt");
			File output = new File("./output2.out");

			if (output.exists())
				output.delete();

			output.createNewFile();

			PrintWriter pw = new PrintWriter(output);
			FileReader fr = new FileReader(f);
			BufferedReader br = new BufferedReader(fr);

			String linea = br.readLine();
			linea = br.readLine();

			int i = 1;
			while (linea != null) {
				int a = Integer.parseInt(linea.split(" ")[0]);
				int b = Integer.parseInt(linea.split(" ")[1]);

				pw.println("Case #" + i + ": " + getRecycledAmmount(a, b));
				linea = br.readLine();
				i++;
			}

			pw.close();
			br.close();
			fr.close();

		} catch (Exception e) {
			e.printStackTrace();
		}

	}

	private int getRecycledAmmount(int start, int end) {
		int ammount = 0;

		for (int n = start; n <= end; n++) {
			for (int m = start; m <= end; m++) {
				if (n < m && isRecycled("" + n, "" + m))
					ammount++;
			}
		}

		return ammount;
	}

	private boolean isRecycled(String n, String m) {

		for (int i = m.length()-1; i > 0; i--) {
			
			String prefix = m.substring(0, i);			
			String suffix = m.substring(i);
			
			String recycled = suffix + prefix;
			if(recycled.equals(n))
				return true;

		}

		return false;

	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		new RecycledNumbers();
	}

}
