Kurwa co ty robisz?
Co ty kurwa robisz?
Co ty robisz kurwa?
Hmm, I wouldn't dare to say the first and the last one to a female. :o) "Kurwa, co ty robisz?!" may sound like you call her a whore, unless you really press it: Kuuurwa! Co ty robisz?! :D
The tragedy is that Poland used to have a complex and powerful system of swearing and it was possible to actually shock people with original and creative combinations.
It's the same in every language, I suppose. Even English, which is really poor when it comes to swearing, could still use "fancy swearings" like: "Glorious piece of a heavenly shit!" But most people have no creativity these days, they are just sad and blatant...