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This question makes no sense. There is only 1 Hebrew language, and it has only one Alphabet: the Hebrew alphabet.
The Hebrew alphabet was borrowed from the Phoenicians.
If you are asking which letters are not in the Ancient Hebrew alphabet, there are none.
The Ancient Hebrew alphabet is identical to the Modern Hebrew alphabet.
There is no letter A in the Hebrew alphabet. In fact, the Hebrew alphabet doesn't have any vowels in it at all.
To form vowels in Hebrew, marks are added to the letters. For example:
The Hebrew alphabet is not divided into parts.