"Pour tu" isn't correct, you must use "Pour toi".
"Pour tu" isn't correct?
http://awesomefrench.tumblr.com/post/21431646180/tu-te-toi-when-do-you-use-them
Hope this helps :)
Walter white
"Pour toi, pour eux" isnt correct?
Why is the polite form "vous" not accepted?
Why isn't l'enfants okay?
is "à toi, à les enfants." considered correct?
I keep writing the correct response like you have listed and it won't accept it. PLEASE CORRECT!