Gravity Pendulum

1.single gravity in center
2.double gravity in center and bottom
3. triple gravity in center, bottom, and right
4.triple gravity in left from center, bottom, and right

in last 5 example:
white never change its pastern, red accelerate and expand then calm down then expand again but not behind boundaries of 2nd acceleration, yellow accelerate and expand then calm down then expand and accelerate even more.

2nd element always stay in boundaries of its pattern, which you can not say about 3rd and 4th