words = input()
for letter in words:
    if not letter.isalpha():  # 判断非字母
        words = words.replace(letter, " ")  # 使用间隔（空格）替换
new_words = (words.split())[::-1]  # 切片字符串返回列表，使用倒序
for i in new_words:
    print(i, end=" ")  # 输出，使用空格间隔