It is written in closed syllables which do not appear at the end of the word.
Supyire has a noticeable syllable structure that includes no closed syllables.
The lowest and most central allophones occur in unstressed closed syllables.
In closed syllables, vowels become open and sometimes centralized.
Proto-Kra has 4 diphthongs, which are not found in closed syllables.
The pronunciation as àà is the default case for closed syllables.
Old Church Slavonic, for example, had no closed syllables at all.
This left no closed syllables at all in these languages.
Some languages like English have many kinds of closed syllables.
Some languages like Japanese have few kinds of closed syllables.