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.*;
import java.util.*;

public class RecycledNumbers
{
	public static void main(String[] args) throws Exception
	{
		BufferedReader in = new BufferedReader(new FileReader("RecycledNumbers-small-attempt0.in"));
		BufferedWriter out = new BufferedWriter(new FileWriter("RecycledNumbers-small-attempt0.out", false));

		String line = in.readLine();
		int cases = Integer.parseInt(line); // # of test cases

		for (int i = 1; i <= cases; i++)
		{
			line = in.readLine();
			String[] parts = line.split(" ");
			int a = Integer.parseInt(parts[0]);
			int b = Integer.parseInt(parts[1]);

			out.write("Case #" + i + ": " + solve(a,b));
			out.newLine();
		}

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

	}

	private static int solve(int a, int b)
	{
		Set<Pair> set = new HashSet<Pair>();
		for (int i = a; i <= b; i++)
		{
			String s = Integer.toString(i);
			char f = s.charAt(0);
			for (int j = 1, len = s.length(); j < len; j++)
			{
				if (s.charAt(j) < f) continue;
				String t = s.substring(j) + s.substring(0, j);
				int k = Integer.parseInt(t);
				if (k > i && k <= b) set.add(new Pair(i, k));
			}
		}
		return set.size();
	}

	private static class Pair
	{
		private int a;
		private int b;

		public Pair(int a, int b)
		{
			this.a = a;
			this.b = b;
		}

		public int hashCode()
		{
			return (a ^ b);
		}

		public boolean equals(Object obj)
		{
			Pair that = (Pair) obj;
			return (this.a == that.a && this.b == that.b);
		}
	}
}

