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();
		}
	}
}

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class RecycledNumbers {

	public static void main(String[] args) {
		List<String> lines = getline("C:\\Users\\Ami\\Downloads\\C-large.in");
		System.out.println("number of TestCases-->>" + lines.remove(0));
		Process(lines);
	}

	private static void Process(List<String> lines) {
		int i = 1;
		for (String line : lines) {
			int k = 0;
			String[] nums = line.split(" ");
			long A = Long.valueOf(nums[0]);
			long B = Long.valueOf(nums[1]);
			for (long j = A; j < B; j++) {
				String j2 = "" + j;
				for (int x = 1; x <=j2.length(); x++) {
					long num = Long.parseLong(j2.substring(x)
							+ j2.substring(0, x));
					if (num > j && num <= B){
						k++;
						//System.out.println(j2+" : "+num);
					}
						
				}
			}
			System.out.println("Case #" + i + ": " + k);
			i++;
		}

	}

	private static List<String> getline(String path) {
		List<String> ls = new ArrayList<String>();
		try {
			FileInputStream fstream = new FileInputStream(path);
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine;
			while ((strLine = br.readLine()) != null) {
				ls.add(strLine);
			}
			in.close();
		} catch (Exception e) {
			System.err.println("Error: " + e.getMessage());
		}
		return ls;
	}
}
