import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

package Qualification_2012;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;

public class RecycledNumbers {

	static BufferedReader in;
	static int A, B;
	static boolean[][] v;
	static HashSet<String> hash;

	private static int get(int x) {
		int tmp = x;
		int c = 0;
		HashSet<Integer> hh = new HashSet<Integer>();

		int len = (x + "").length();

		int pow = (int) Math.pow(10, len);

		for (int i = 0; i < len - 1; i++) {
			boolean f = false;
			if (x % 10 == 0)
				f = true;

			x = ((x % 10) * pow + x) / 10;

			if (f)
				continue;
			if (x >= A && x <= B && tmp < x && len == (x + "").length()) {
				if (!hh.contains(x)) {
					hh.add(x);
					c++;
				}
			}
		}
		return c;
	}

	private static String solve() throws IOException {
		hash = new HashSet<String>();
		String s[] = in.readLine().split(" ");
		long ans = 0;
		A = Integer.parseInt(s[0]);
		B = Integer.parseInt(s[1]);
		for (int i = A; i < B; i++)
			ans += get(i);
		return ans + "";
	}

	public static void main(String[] args) throws IOException {

		in = new BufferedReader(new FileReader("in.in"));
		FileWriter out = new FileWriter("out.out");
		int t = Integer.parseInt(in.readLine());
		for (int i = 1; i <= t; i++) {
			out.write("Case #" + i + ": " + solve() + "\n");
		}
		in.close();
		out.close();
	}

}
