Cellular automata collider

Spaceship in the Single Rotation rule and similar reversible cellular automata often have very long periods, making manual enumeration of all possible interactions problematic.

I made a "collider" script that automatically enumerates all possible interactions of 2 patterns.

Here are some results of colliding 5 lightest spaceships (A..F) with simple patterns:

Single cell

A B C D E F

2x2 block

A B C D E F

2x4 block

A B C D E F