The numbers between them are the distances between zygotes. The numbers in front of them indicate the count which triggered the injury and movement.
I. The first encounter ended in their mutual annihilation.
II. During the second encounter, the mover triggered the upper CA to a new solution (A) which was soon replaced by the same solution of the mover (B). The CA moved at the same velocity like the triggering CA which died after triggering. This interaction might be regarded as biological collision.
III. Another biological collision. This CA cruises slower than the previous one. (v Chapter 11)
You may now explore this interaction in an applet.