a diglossic linguistic area. Attic Greek was standardized as the language of the court, formal discourse and diplomacy from as early as the time of Archelaus at the end of the 5th century BC. Attic was further spread by Macedonia's conquests. Although Macedonian continued to be spoken well into Antigonid times, it became the prevalent oral dialect in Macedonia and throughout the Macedonian-ruled Hellenistic world. However, Macedonian became extinct in either the Hellenistic or the Roman period, and entirely replaced by Koine Greek. For instance, Cleopatra VII Philopator, the last active ruler of the Ptolemaic dynasty in Egypt, spoke Koine Greek as a first language and by her reign (51–30 BC) or some time before it the Macedonian language was no longer used. Attempts to classify Ancient Macedonian are hindered by the lack of surviving Ancient Macedonian texts; it was a mainly oral language and most archaeological inscriptions indicate that in Macedonia there was no dominant written language besides Attic and later Koine Greek. All surviving epigraphical evidence from grave markers and public inscriptions is in Greek. Classification attempts are based on a vocabulary of 150–200 words and 200 personal names assembled mainly from the 5th century lexicon of Hesychius of Alexandria and a few surviving fragmentary inscriptions, coins and occasional passages in ancient sources. Most of the vocabulary is regular Greek, with tendencies toward Doric Greek and Aeolic Greek. There can be found some Illyrian and Thracian elements. The Pella curse tablet, which was found in 1986 at Pella and dates to the mid-4th century BC or slightly earlier, is believed to be the only substantial attested text in Macedonian. The language of the tablet is a distinctly recognizable form of Northwest Greek. The tablet has been used to support the argument that ancient Macedonian was a Northwest Greek dialect and mainly a Doric Greek dialect. Hatzopoulos's analysis revealed some tendencies toward the Aeolic Greek dialect. Hatzopoulos also states that the native language of the ancient Macedonians also betrays a slight phonetic influence from the languages of the original inhabitants of the region who were assimilated or expelled by the invading Macedonians. He also asserts that little is known about the languages of these original inhabitants aside from Phrygian spoken by the Bryges, who migrated to Anatolia. Hatzopoulos has suggested that the Macedonian dialect of the 4th century BC, as attested in the Pella curse tablet, was a sort