poredati

1. to arrange; to line up; to put in order
   Poredala je knjige po veličini. — She arranged the books by size.
   Poredaj čaše na sto, molim te. — Line up the glasses on the table, please.
2. (poredati se) to line up; to form a row
   Deca su se poredala ispred škole. — The children lined up in front of the school.

Often used with "po": poredati po abecedi, po veličini (alphabetically, by size).