Simplify the following text for a Grade 12 native English-speaking person.
Original: However , the Georgian linguist Tamaz Gamkrelidze argues that the forms of the letters are freely invented in imitation of the Greek model rather than directly based upon earlier forms of the Aramaic alphabet , even though the Georgian phonological inventory is very different from Greek .
Simplified: Greek and Aramaic influences have been shown , but some Georgian scholars like Tamaz V. Gamkrelidze have said that they were freely invented in imitation of the Greek model rather than directly based upon earlier forms of the Aramaic alphabet even though the Georgian phonological inventory is very different from Greek .