What is the correct expressions?
What is the correct expressions among the following

- I would to speak with you in a private subject.
- I would to speak with you in a private topic.
- I would to speak with you in a private issue.
- I would to speak with you in a private thing.

Question

What is the correct expressions?
What is the correct expressions among the following

- I would to speak with you in a private subject.
- I would to speak with you in a private topic.
- I would to speak with you in a private issue.
- I would to speak with you in a private thing.

Answer

I would like to speak to you in private.
I would like to speak to you about a private issue/private matter.

Answer

I would like to speak to you regarding a private matter.

Answer

"I would like to speak with you about a private matter."