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,
Avestan alphabet alphabet, with explicit characters for vowels, and allowed for phonetic disambiguation of allophones. The alphabet included many characters ("a", "i", "k", "t", "p", "b", "m", "n", "r", "s", "z", "š", "x") from cursive Pahlavi, while some ("ā", "γ") are characters that only exist in the Psalter Pahlavi variant (in cursive Pahlavi "γ" and "k" have the same symbol). Some of the vowels, such as "ə" appear to derive from Greek minuscules. Avestan "o" is a special form of Pahlavi "l" that exists only in Aramaic signs. Some letters (e.g. "ŋ́", "ṇ", "ẏ", "v"), are free inventions. Avestan script, like Pahlavi