The form of Latin S arises from Greek Σ by dropping one particular out of your 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 already within the epigraphy of Western Greek alphabets, along with https://josuebtiwl.thenerdsblog.com/36969251/the-bud-naked-concentrate-diaries