And the search continued: The Rayist (Luchizm) drawings of Natalia Goncharova and Mikhail Larionov, used lines like rays of light to make a construction. Kasimir Malevich completed his first entirely abstract work, the Suprematist, "Black Square", in 1915. Another of the Suprematist group' Liubov Popova, created the Architectonic Constructions and Spatial Force Constructions between 1916 and 1921. Piet Mondrian was evolving his abstract language, of horizontal and vertical lines with rectangles of color, between 1915 and 1919, Neo-Plasticism was the aesthetic which Mondrian, Theo van Doesburg and other in the group De Stijl intended to reshape the environment of the future.