The shape of Latin S arises from Greek Σ by dropping a single out with the 4 strokes of that letter. The (angular) S-form made up of 3 strokes existed being a variant with the 4-stroke letter Σ by now in the epigraphy of Western Greek alphabets, and also the https://budnakedkits53197.pointblog.net/the-bud-naked-pre-rolls-diaries-73634387