This is the fundamental movement which causes the field to fluctuate. It is a cubic field so in reality it is much more complex transformation. But this is the simplest form. Broken down to 2D and just one swastika in one direction.
It is only one swastika that is highlighted but the whole field is composed of the same angles moving unidirectional in a diagonal vector. So the angles are combining into swastika and MBG in a never ending cycle.