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How to add a back button and navigation bar to already existing storyboard?

I'm new to iOS development. I'd like to know, how to add a back button to a VC, I don't have a navigation bar also. The method of 'embedding' it will also not work, as I have to change a few things. Is there an easier method? Thanks in advance.

Since you said that you don't want to embed it in navigation controller, you can drag&drop UINavigation Bar from the sidebar:

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