Between the last post on small graph rewrite systems and a new one to follow, here are some other, real world examples of such systems.
Where is this from? Answer: M. Khovanov, New geometrical constructions in low-dimensional topology, preprint 1990, fig. 20
Where is this from? Answer: L.H. Kauffman, Knots and Physics, World Scientific 1991, p. 336.
How can we put this in order?