package Lab;

import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class MatchFullName_06 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String[] input = scanner.nextLine().split(", ");

        String regex = "^[A-Z][a-z]+ [A-Z][a-z]+$";

        Pattern pattern = Pattern.compile(regex);

        for (String name : input) {

            Matcher matcher = pattern.matcher(name);

            if (matcher.find()) {
                System.out.print(matcher.group() + " ");
            }

        }
    }
}