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 are homophones, but "bed", "bad" or "med", "mad" are kept distinct. For others, it occurs in all positions. The "met"–"mate" merger is a phenomenon occurring for some speakers of Zulu English in which and are both pronounced . As a result, the words "met" and "mate" are homophonous as . 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: