Original: By then Greek was written left to right , but originally it had been written right to left ( with asymmetrical characters flipped ) , and in-between written either way -- or , most likely , in the so-called boustrophedon style , where successive lines alternate direction .
Simplified: At first , Greek was written from right to left , the same as Phoenician , but after the 6th century BC , it was written from left to right .