There is a problem, if it´s done for front- and backside.
Topview
Oscar Reutersvärd 61
Topview
Oscar Reutersvärd 62
Michael Cheshire 2
Perspective
Michael Chesire 3
Backside
Perspective
Material I Own 2 with backside
Topview
Michael Chesire 4
Stanislav Konenko has drawn it impossible. If it´s done the possible way, two sides and two edges are the result. The variation is single sided, one edge.