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 google.code.jam;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.ListIterator;

public class RecycledNumbers {

	final static String fileNameIn = "C-large.in";
	final static String fileNameOut = "C-large.out";

	private static int solve(int A, int B) {
		HashMap<String, Integer> hashMap = new HashMap<String, Integer>();
		for (int i = A; i <= B; i++) {
			String n = new Integer(i).toString();
			String key = minimum(n);
			if (Integer.valueOf(n) >= A && Integer.valueOf(n) <= B) {
				if (!hashMap.containsKey(key)) {
					hashMap.put(key, 1);
				} else {
					hashMap.put(key, hashMap.get(key) + 1);
				}
			}
		}
		int count = 0;
		for (String key : hashMap.keySet()) {
			Integer value = hashMap.get(key);
			count = count + (value * (value - 1) / 2);
		}
		return count;
	}

	private static String minimum(String input) {
		String min = input;
		for (int i = 0; i < input.length(); i++) {
			if (Integer.valueOf(shift(input, i)) < Integer.valueOf(min)) {
				min = shift(input, i);
			}
		}
		return min;
	}

	private static String shift(String input, int n) {
		return input.substring(n, input.length()) + input.substring(0, n);
	}

	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader(fileNameIn));
		BufferedWriter out = new BufferedWriter(new FileWriter(fileNameOut));
		int testCases = Integer.parseInt(in.readLine());
		for (int i = 0; i < testCases; i++) {
			String[] elements = in.readLine().split(
					new Character((char) 32).toString());
			List<Integer> values = new ArrayList<Integer>();
			for (String v : elements) {
				values.add(Integer.valueOf(v));
			}
			ListIterator<Integer> iterator = values.listIterator();
			int A = iterator.next();
			int B = iterator.next();
			out.write(String.format("Case #%s: %s\n", i + 1, solve(A, B)));
		}
		in.close();
		out.close();
	}

}
