import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.*;
public class mostFrequentWord 
{
	LinkedList<Word> list = new LinkedList<Word>();
	public void Read()
	throws FileNotFoundException
	{
		Scanner input = new Scanner(System.in);
		FileReader reader = new FileReader("test.txt");
		Scanner in = new Scanner(reader);
		in.useDelimiter(" [ ^ a - zA - Z ] + ");
		while (in.hasNext())
		{
			String s = in.next().toLowerCase();
			System.out.println(s);
		}
 
 
 
 
 
	}
}

import java.util.LinkedList;
 
public class Word 
{
	private String toWord;
	private int Count;
 
	public void assign(int count, String word)
	{
		toWord = word;
		Count = count;
	}
	public void isEqual()
	{
		LinkedList<Word> list = new LinkedList<Word>();
 
		 String x = "?";
		 String x2 = "?";
		 if (x.equals(x2))
		 {
			 System.out.println("?");
		 }
 
	}
 
 
 
 
}

import java.io.FileNotFoundException;
 
public class testmostFrequentWord 
{
	public static void main(String[] args) 
	throws FileNotFoundException 
	{
		mostFrequentWord  m = new mostFrequentWord();
		Word w = new Word();
		m.Read();
		w.isEqual();
 
	}
 
}