* Vowels can occur in both initial and non-initial syllables. Vowels generally occur in initial syllables; they can occur in non-initial syllables only in compound words, exclamations, proper names and unnaturalized loanwords.
* The front vowels are phonetically near-front .
* Before and after , the back vowels can be fronted to .
* The unrounded vowel transcribed can be realized as close back , close-mid central or close-mid back ,