it involves complicated shapes 

 

https://i.poastcdn.org/7e682f40df41b697a725c90a24f0926cca6d42fd91e3da64a4376417b76916e4.png 

 

https://nightshift.social/media/1e9b9825d1a432f4d4f6365f275c20f9b8ea187e2732d93dad4ec80599ff608a.jpeg