Problem of form-finding for tensegrity structure illustrated by topological way

Hi, 

I am trying to find form of tensegrity model with kangaroo.

And I drew the tensegrity model with topologycal way(1).

I would like 6strut tensegrity sphere(2), but cables get entangled and only get a misshapen model(3).

What can I do for this problem? Are there some way to make cables penetrating?

Sorry for my unskilled English, I’m not good at English ;-)