The shape of Latin S arises from Greek Σ by dropping 1 out with the 4 strokes of that letter. The (angular) S-condition made up of 3 strokes existed for a variant on the 4-stroke letter Σ by now in the epigraphy of Western Greek alphabets, as well as the https://rafaelzrgvk.blogmazing.com/30687302/facts-about-bud-naked-mushrooms-revealed