Native English speakers, please help?

I have the different sentences. Here they are. ////////////////////////////////////////////////////////////////////////// For what purpose do you plan to visit Katie? What purpose do you plan to visit Katie for? What is the purpose you are going to Katie for? What is the purpose of your going to... show more I have the different sentences. Here they are.

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For what purpose do you plan to visit Katie?
What purpose do you plan to visit Katie for?
What is the purpose you are going to Katie for?
What is the purpose of your going to Katie?
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Please give the all possible right sentences with these words and point out mistakes if mine is not correct.
Update: + For what purpose you are going to Katie?
3 answers 3