// This program removes excess space in an input file.

import java.io.*;
import java.util.*;

public class FixSpacing {
    public static void main(String[] args)
            throws FileNotFoundException {
        Scanner input = new Scanner(new File("words.txt"));
        PrintStream output =
            new PrintStream(new File("words2.txt"));
        while (input.hasNextLine()) {
            String text = input.nextLine();
            echoFixed(text, output);
            echoFixed(text, System.out);
        }
    }
    
    public static void echoFixed(String text,
                                 PrintStream output) {
        Scanner data = new Scanner(text);
        if (data.hasNext()) {
            output.print(data.next());
            while (data.hasNext()) {
                output.print(" " + data.next());
            }
        }
        output.println();
    }
}