magsi-, N-, pa-, -um-, si-/mag-
To put s.t. or s.o. beside s.t. or s.o. else; to become a partner or companion with s.o. in doing s.t.
Put Haypa and Ismael next to each other so we can see who is the tallest.
Who put this black cup next to the white one?
That string of fish isn't very big, put four more rabbitfish with it.
That person has a good livelihood because he happened to become a partner with a rich person.