Maintaining a small period in a confined space is tricky. Have a solve that uses input suppression to go quicker, but it takes 15G more. Feel that min primary can get below 90.

The tradeoff to spend 2 area to save 1 period was interesting.

Settled on period 4, since period 3 has many requirements:
 - Needs way to dispose, length 2 swing takes up too much area, so period 3 needs a 4 long track loop at minimum for disposal, which is an area sink. Can reuse track with second arm, but still pretty restrictive, leaving 5 area for a better primary
 - Can't steal atoms from hex-arms in period 3, so can't debond the mors/vitae inside one, so need either a smaller arm or different way to debond in a space efficient manner