L-system how to create a 3d form by based on L-system

I am looking to create a rectangular L system which is based on attached file but is going to be reapited in different dimention. In fact I am looking to create a 3 d model which can be manipulated flexibly to reach the form I wanted.
Thank you for your help .
l system 1.pdf (1.2 MB)

Hello - sounds like Grasshopper work - please see

www.grasshopper3d.com

-Pascal