you cant have east on top as east is not a place, it has no location, it is only a direction.
north and south are locations (as well as directions towards those locations) as defined either by geomagnetism or the rotational axis.
you can walk “towards the east” for an infinitely long distance.
you can only walk towards the north until you get there (about maybe 6,000 miles from the equator, also a place)