Grasshopper

algorithmic modeling for Rhino

I had a question about branch selection and then lofting from them.

I have 2 sets of polycurves directly above each other. each are located in their own branch. I wish to loft the surfaces that are directly above each other (that correspond to the same number in each branch like 0:0:2 of one branch would connect to 0:0:2 in the other).

Right now i have a certain number of branches (not too many) and because i have not been able to figure out how to connect them without selecting each polycurve individually using the Item from list tool and a slider (see images).

Is there a way to have Grasshopper automatically find the same numbered curves and then loft them? So far all that happens when I try is that each polycurve on the same surface lofts which ends up with a confusing array of a flat lofted surface. I want to perhaps make surfaces with many many more polycurves on them which would make the manual item finding impossible. Thanks for any help!

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