Ordinary, routine (3,2,3,4)
I believe the answer is:
run of the mill
I believe this is a double definition.
'ordinary' is the first definition.
(I've seen this before)
'routine' is the second definition.
(thesaurus)
(Other definitions for run of the mill that I've seen before include "freedom of factory worker to move around?" , "Routine freedom" , "Ordinary" , "Tom and Maggie Tulliver enjoyed?" , "access to all areas in factory" .)