Writers often divide proofreading into two phases. What are those phases?

First, check for spelling mistakes and sentence-level errors. Second, check for punctuation errors and typos.
First, find punctuation errors. Second, find spelling mistakes and sentence-level errors, and typos.
First, discover typos. Second, discover spelling mistakes, sentence-level errors, and punctuation errors.
First, look for sentence-level errors. Second, look for spelling mistakes, punctuation errors, and typos.