5x6 2-story pivoted P-pentomino (IPP19 exchange)

Manufactured bu Dario Uri.

12 P-pentomino pieces are connected in pairs so that they can rotate around their connection point.
As a result each pair can form 4 different 2-layered shapes.
The goal of the puzze is to pack the 6 pairs into the 5x6 tray in 2 layers. 

The tray measures 99 x 87 x 21 mm (when solved)

     ---------- payment & shipping ----------

Payment via Transferwise (no fee) or Paypal (6% fee), or IBAN within EU (no fee).
Shipping cost is €20 outside Europe,  €15 within Europe, €6 within NL.
Multiple items can be shipped together, also with items recently bought from me via other auctions or marketplace.