Alphabet alphabet is sometimes claimed to be as small, but it actually consists of 18 letters, including the ʻokina and five long vowels. However, Hawaiian Braille has only 13 letters.) While Rotokas has a small alphabet because it has few phonemes to represent (just eleven), Book Pahlavi was small because many letters had been "conflated"—that is, the graphic distinctions had been lost over time, and diacritics were not developed to compensate for this as they were in Arabic, another script that lost many of its distinct letter shapes. For example, a comma-shaped letter represented "g", "d", "y", "k", or "j". However,
Old Uyghur alphabet years in Turpan. The last known manuscripts are dated to the 18th century. This was the prototype for the Mongolian and Manchu alphabets. The Old Uyghur alphabet was brought to Mongolia by Tata-tonga. Like the Sogdian alphabet, the Old Uyghur tended to use "matres lectionis" for the long vowels as well as for the short ones. The practice of leaving short vowels unrepresented was almost completely abandoned. Thus, while ultimately deriving from a Semitic abjad, the Old Uyghur alphabet can be said to have been largely "alphabetized". Old Uyghur alphabet The Old Uyghur alphabet was used for writing the Old