The form of Latin S occurs from Greek Σ by dropping just one out of the four strokes of that letter. The (angular) S-shape made up of a few strokes existed as being a variant with the 4-stroke letter Σ currently in the epigraphy of Western Greek alphabets, and also https://bud-naked31974.mdkblog.com/37040957/the-5-second-trick-for-bud-naked-concentrate