I assume you mean guesses as to what will be asked?
It is impossible these days to make sensible guesses, especially with there being four sittings a year. Everything in the syllabus is likely to be examined somewhere in the exam.
That is why it is so important to practice every question in your Revision Kit. Once you have practiced every question and learned from your mistakes, you should be well prepared for the exam 🙂
(It stopped being called Paper F9 several years ago and is now Paper FM.)