#52 is an abstract figures that somehow form the SAS letters
#53 is just the abstract figures that I got from turning upside down a piece from the windows from Cattedrale di Santa Maria del Fiore
#54 is inspired on the Duomo but simplified and so is
#56#55 is inspired in a window from Cattedrale di Santa Maria del Fiore
I hope you find my entries interesting.
Many thanks.
A.