Impossible alphabets and fonts

An inscription for T-shirts with impossible letter was designed in Alfalfa Studio, each letter of which represents impossible figure in style Oscar Reutersvärd's series of images "Images in the floor". The inscription consists of six letter and reresents word "Sunday", but they are planning to extends this set of letters to the whole impossible alphabet. Three additional letters F, G and X are already designed.

Images were found at http://alfalfastudio.com/the-impossible-undecidable-sunday/.