Tensegrity + Hoopsnake + problem

Dear friends,

I am doing a definition for a Tensegrity structure for uni and I am having problem implementing hoopsnake to iterate my 3strut unit to form an overall structure. 

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The definition is attached. 

I also have a version with hoopsnake but I could not make it work. 

So I am using clusters to feed the loops to generate the above pattern.

Can someone help me to adjust the above definition to use hoopsnake to loop instead of using the clusters. 

One of the challenges I had was selecting different list items everytime the loops progresses. If you see inside the clusters I used  CASE statement using C# to generate 3 different scenario for the selection however when I include into the loops it doesnt work very well. 

If someone can see the logic in my definition using the cluster and suggest a way to implement using hoopsnake, I would be very much appreciate the assistance.