line (something) up
Definition: to put things in a row.
(This phrasal verb has more than one meaning)
E.g.1: Could you line up according to your age? The oldest should stand at the front, and the youngest at the back.
E.g.2: He was bored so he spent the afternoon lining his books up on the shelf.
This phrasal verb can be separated. (E.g.2)