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 nl.bertjesapps.googlecodejam;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;

public class ProblemThree {
	
	private Set<String> results = new HashSet<>();
	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		if (args.length == 1) {
			String fileName = args[0];
			ProblemThree problemOne = new ProblemThree();
			try {
				problemOne.solveFile(fileName);
			} catch (FileNotFoundException fnf) {
				System.out.println("File not found!");
				System.out.println(fnf.getMessage());
			} catch (IOException e) {
				System.out.println("Could not read file!");
			}
		} else {
			System.out.println("Need 1 argument!");
		}
	}

	private void solveFile(String fileName) throws IOException {
		StringBuilder output = new StringBuilder();
		File file = new File(fileName);
		FileReader fileReader = new FileReader(file);
		BufferedReader reader = new BufferedReader(fileReader);
		String numberOfCasesString = reader.readLine();
		int numberOfCases = Integer.parseInt(numberOfCasesString);
		for (int i = 1; i <= numberOfCases; i++) {
			output.append("Case #" + i + ": ");
			output.append(solveLine(reader.readLine()));
			output.append("\r\n");
		}
		//output.append(results.size());
		FileWriter writer = new FileWriter(fileName.replace(".in", ".out"));
		writer.write(output.toString());
		writer.close();
	}
	
	private String solveLine(String lineToBeSolved) {
		int result = 0;
		String[] parts = lineToBeSolved.split(" ");
		int startingNumber = Integer.parseInt(parts[0]);
		int endingNumber = Integer.parseInt(parts[1]);
		for (int i = startingNumber; i <= endingNumber; i++) {
			countRecycled(i, endingNumber);
		}
		result = results.size();
		results = new HashSet<>();
		return "" + result;
	}
	
	private void countRecycled(int source, int endingNumber) {
		StringBuilder builder = new StringBuilder();
		builder.append(source);
		for (int i = 1; i < builder.length(); i++) {
			String checkNumber = builder.substring(i) + builder.substring(0,i);
			int resultNumber = Integer.parseInt(checkNumber);
			if (resultNumber > source && resultNumber <= endingNumber) {
				results.add("" + source + "" + resultNumber);
			}
		}
	}
}


