import java.util.*;
import java.lang.*;
import java.math.*;
import java.io.*;

import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.util.Collections.*;

public class C{
	Scanner sc=new Scanner(System.in);

	int INF=1<<28;
	double EPS=1e-9;

	int caze, T;
	int A, B;

	void run(){
		T=sc.nextInt();
		for(caze=1; caze<=T; caze++){
			A=sc.nextInt();
			B=sc.nextInt();
			solve();
		}
	}

	void solve(){
		int ans=0;
		for(int n=A; n<=B; n++){
			int digit=(int)(log10(n)+EPS);
			int d=(int)pow(10, digit);
			// debug("n", n);
			for(int m=rot(n, d); m!=n; m=rot(m, d)){
				// debug("m", m);
				if(n<m&&m<=B){
					ans++;
				}
			}
		}
		answer(ans+"");
	}

	int rot(int n, int d){
		return n/10+n%10*d;
	}

	void answer(String s){
		println("Case #"+caze+": "+s);
	}

	void println(String s){
		System.out.println(s);
	}

	void print(String s){
		System.out.print(s);
	}

	void debug(Object... os){
		System.err.println(deepToString(os));
	}

	public static void main(String[] args){
		try{
			System.setIn(new FileInputStream("dat/C-small.in"));
			System.setOut(new PrintStream(new FileOutputStream("dat/C-small.out")));
		}catch(Exception e){}
		new C().run();
		System.out.flush();
		System.out.close();
	}
}

package de.at.codejam.gui;

import java.awt.BorderLayout;
import java.io.File;

import javax.swing.JFileChooser;
import javax.swing.JPanel;
import javax.swing.filechooser.FileFilter;

import de.at.codejam.util.CodeJamConstants;
import de.at.codejam.util.StatusListener;
import de.at.codejam.util.TaskStatus;

public class CodeJamMainPanel extends JPanel implements CodeJamConstants,
		StatusListener {

	private static final long serialVersionUID = 5367570736703559286L;

	private JPanel mainArea = new JPanel(new BorderLayout());

	private final CodeJamStatusPanel statusPanel = new CodeJamStatusPanel();
	private final JFileChooser fileChooser = new JFileChooser(
			DEFAULT_CODE_JAM_DIRECTORY);

	public CodeJamMainPanel() {

		super(new BorderLayout());

		fileChooser.setAcceptAllFileFilterUsed(true);
		fileChooser.setDialogType(JFileChooser.OPEN_DIALOG);
		fileChooser.setDialogTitle("Input File Selection");
		FileFilter fileFilter = new FileFilter() {
			@Override
			public boolean accept(File inFile) {
				return inFile.isFile() && inFile.getName().endsWith(".in");
			}

			@Override
			public String getDescription() {
				return "Google Code Jam - .in files";
			}
		};
		fileChooser.addChoosableFileFilter(fileFilter);

		mainArea.add(statusPanel, BorderLayout.NORTH);
		mainArea.add(fileChooser);
		add(mainArea);
	}

	@Override
	public void updateStatus(TaskStatus taskStatus) {
		statusPanel.updateStatus(taskStatus);
	}

	@Override
	public void log(int logLevel, String message) {
		statusPanel.log(logLevel, message);
	}

	public JFileChooser getFileChooser() {
		return fileChooser;
	}
}
