Korowai language

Korowai (Kolufaup) is a Trans-New-Guinean language spoken in South Papua, Indonesia. It is spoken by the Korowai people who live along the Becking River.

Phonology

 * /b/ and /d/ are in free variation with [ɓ] and [ɗ] respectively.
 * /ɸ x/ can be voiced [β ɣ] intervocalically.
 * /e/ can be heard as [ɪ] in unstressed syllables.
 * /a/ can vary to [æ] in stressed syllables.
 * /ɔ/ is pronounced [o] before /w/.
 * All vowels are lengthened in stressed syllables and word-finally.
 * /ə/ is epenthetic and is never in stressed syllables.

Stress is unpredictable and phonemic.