Deform overlapping Surface Box

Hello dear grasshopper community,

As attached in my geometry file, i would like to know if its possible to deform overlapping boxes. Ideally, with the corner boxes having a 45degree angle.

Ive been incapable of dividing a brep as a whole, and the sweep function behave strangely when i input all my curves at once.  I procedeed by sweeping 4 sides, and when i use the Suface Box component, they all overlap. (as shown above)

Is there a way to avoid this?

Here is an exagerated illustration, where i moved the edges after baking the Sbox, so the corners dont overlap.

Thank you very much for your help

Daniel