Hawaiian alphabet not make it a letter of the alphabet. In publishing the Hawaiian Bible, they used the okina to distinguish ' ('my') from ' ('your'). It was not until 1864 that the okina became a recognized letter of the Hawaiian alphabet. As early as 1821, one of the missionaries, Hiram Bingham, was using macrons in making handwritten transcriptions of Hawaiian vowels. The macron, or "", was used to differentiate between short and long vowels. The current official Hawaiian alphabet consists of 12 letters: five vowels (A a, E e, I i, O o, U u) and seven consonants (H h, K
Phonological history of English high front vowels Phonological history of English high front vowels The high and mid-height front vowels of English (vowels of "i" and "e" type) have undergone a variety of changes over time, often varying from dialect to dialect. Middle English had a long close front vowel , and two long mid front vowels: the close-mid and the open-mid . The three vowels generally correspond to the modern spellings , and respectively, although other spellings are also possible. The spellings that became established in Early Modern English are mostly still used today, although the qualities of the sounds have changed significantly. These and generally