The form of Latin S occurs from Greek Σ by dropping a person out of the 4 strokes of that letter. The (angular) S-condition made up of a few strokes existed to be a variant of the 4-stroke letter Σ now in the epigraphy of Western Greek alphabets, as well https://budnakedkits53197.pointblog.net/the-bud-naked-pre-rolls-diaries-73634387