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

public class Program_16_3 {
	public static void main(String [] args) throws Exception {
		Scanner scanner = new Scanner(new File("document.text"));

		while (scanner.hasNextLine()) {
			String line = scanner.nextLine().trim();

			int i = 0;
			while (i < line.length()) {
				while (i < line.length() && !Character.isLetter(line.charAt(i))) 
					i++;

				String word = "";
				while (i < line.length() && Character.isLetter(line.charAt(i))) {
					word += line.charAt(i);
					i++;
				}

				System.out.println(word);
			}
			System.out.println();
		}
	}
}