History of the Greek alphabet retained the sound. A symbol based on the left-hand half ( ├ ) of the letter Η was therefore sometimes used to indicate the presence of where necessary, and its absence was indicated by a symbol based on the right half. During the classical period, ΕΙ came to be pronounced and ΟΥ came to be pronounced , Υ having meanwhile moved to . By about 200 BC, a system of diacritical marks was invented, representing the tone accents in use in Ancient Greek. This also helped to indicate the length of the vowels Α, Ι, and Υ in certain cases
Gothic alphabet Gothic alphabet The Gothic alphabet is an alphabet for writing the Gothic language, created in the 4th century by Ulfilas (or Wulfila) for the purpose of translating the Bible. The alphabet is essentially an uncial form of the Greek alphabet, with a few additional letters to account for Gothic phonology: Latin F and G, a questionably Runic letter to distinguish the /w/ glide from vocalic /u/, and the letter ƕair to express the Gothic labiovelar. Ulfilas is thought to have consciously chosen to avoid the use of the older Runic alphabet for this purpose, as it was heavily connected with