Statics - Stripes-2

All Objects are made of two identical metal stripes.

In the beginning the stripes were simply welded one to each other at both ends.

From such a part one can form an object like "base-2" and I found the arrangement to be extremely flexible to build other forms.

As the used material was strong spring steel I hurt my face as the object flipped from one state to another. Avoiding futher mishaps I started to plait the edges before welding when generating objects like type "base-2".

From this basic form a whole series of forms can be evolved. This is done only by bending and flipping and results in various forms where you hardly imagine the common construction.

Its an interesting puzzle question, how many essential different forms you can make. Suggestions are welcome!

An interested reader may reconstruct the objects from paper stripes.