Endnote 1 – What’s the Oldest Hebrew Inscription?
It is usually argued that Phoenician had 22 consonantal phonemes, hence the presence of 22 graphemes in the Phoenician alphabet. It is also usually noted (accurately) that both Hebrew and Aramaic (etc.) had more than 22 consonantal phonemes and that for this reason some of the consonantal graphemes needed to do “double duty” in Hebrew and Aramaic.