How to create curve tree structure to loft

Greetings, simple problem from the newbie:

I have a list of stacked curves that I’d like to loft in this pattern:
loft curves # [0,1,2], [2,3,4], [4,5,6], …

It seems like the path mapper would be the way to go, but so far I haven’t solved it.
My solution works but seems overly clunky - I merged two trees that look like this:
[0,1], [2,3], [4,5], … & [2], [4], [6], … (18.7 KB)
tree_manipulation_test.3dm (149.6 KB)

Is this what you are after? (13.5 KB)

1 Like

I like it!
Good solution, thanks HS…