*write (something) up*
Definition: to re-write your notes or information so that you have a complete, neat essay or text.
(This phrasal verb has more than one meaning)
E.g.1: I’ve done the research for my essay, I just have to write my notes up and give the essay to my professor.
E.g.2: When you’ve written up the notes you took at the meeting, could you send me a copy?
This phrasal verb can be separated (E.g.1)