Loop data using Anemone or C# code

Hmmm, if I understood what you want correctly, I think you don’t need any kind of iteration to solve this:

data operation_v01.gh (18.0 KB)

PD: ‘Flip Last’ is a component from the plug - in Treesloth. As I like to avoid using plug-ins, Andrew helped in replicating it with native components.

Alternatively, you can shift paths and partition the list by 4. But ‘Flip Last’ is a more generic answer that should work for all trees.