public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String[] splitStr = scanner.nextLine().split("[^a-zA-Z]"); //非字母都用作分隔符
StringBuilder str = new StringBuilder();
for (int i = splitStr.length - 1; i >= 0; i--) {
str.append(splitStr[i]);
if(i != 0) {
str.append(" ");
}
}
System.out.println(str.toString());
}