using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        string test = "Marley’s final studio album: Uprising.";

        List<string> words = new List<string>();

        string word = "";

        for (int i = 0; i < test.Length; i++)

        {

            char ch = test[i];

            if (ch != ' ') 

            {

                if (ch >= 'A' && ch <= 'Z' || ch >= 'a' && ch <= 'z')

                {

                    word += ch;

                    if (i == test.Length - 1)

                        words.Add(word);

                }

            }

            else

            {

                words.Add(word);  

                word = "";

            }

        }

        Console.WriteLine(String.Join(" ", words.ToArray()));

    }

}