using System;
using System.Collections.Generic;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();

            string[] words = input
                .Split(new[] { '.', ',', '!', '?', '-', ' ' }, StringSplitOptions.RemoveEmptyEntries);
            Stack<string> reversedSentence = new Stack<string>();

            foreach (var item in words)
            {
                reversedSentence.Push(item);
            }
            while (reversedSentence.Count>0)
            {
                Console.WriteLine(reversedSentence.Pop());
            }



        }
    }
}