Empty Puzzle

The goal of this acrylic packing puzzle is to arrance the elements on the black field in such a way that the empty spaces would form a specified number (n) of congruent shapes (ie. shapes equal in form and size).  Solve this task sequentailly for n=2; n=3; n=4; n=6.  Moreover, the resulting shapes for n=2;, n=3, n=4 should not touch each other even at the corners.

A great puzzle of negative or empty space!

Created by Russian designer Vladimir Krasnoukhov.