Here is a pentagonal knitting pattern done in chemlambda, as appears after 20 steps:
The knitting is made of abstraction (lambda) nodes, in the middle, bordered by fanin nodes.
The knitting molecule appears after 3 steps, it can be then seen at the top of the figure.
The white small molecules are loops.
This pattern appeared after playing a bit more with switchers. Here is a video about switchers