multiplication

Hi, I have a problem to multiplicate my basic model - brep. I want to make a strukture like in a photo (I made this on my own, i want to have it in GH). The problem is that i can't make it go higher and randomly multiplicate in different directions. There is sth about center of pollar array next breps. Sometimes i want to have all 6 breps in one module, sometimes just 2/3/4/5 (randomly). In addition i made function that when the brep "see" parallel brep it links with it by lines. And it works :D
The last form it's not so important, i want the logic script. I get stuck in a point and don't know what to do. Can anyone help me to solve this problem, please?