Bunama language
Bunama is an Austronesian language spoken in the D'Entrecasteaux Islands of Papua New Guinea.

Phonology

Consonants 

  can fluctuate to aspirated  in stressed syllables.
  can also be heard as  word-initially in stressed syllables.
  can be heard as a fricative  intervocalically in word-medial position.
  can be heard as a tap  intervocalically in word-medial position.
  can be heard as a more fronted  in unstressed syllables following vowels .
 Prevoicing of the lateral flap  may also occur in initial positions.
  may also be heard as a retroflex flap  depending on the dialect of the speaker. It can also be heard as  when realized as prevoiced in word-initial positions.
  may fluctuate to a labio-dental  among some speakers.
  may be realized as a dental approximant  when before .

Vowels 

  is heard as  before and after a labialized consonant, or with sounds , . It is also heard as  word-medially and word-finally in unstressed syllables.
  is heard as  word-medially and word-finally but never following labialized consonants, or semivowels . It is heard as  when following sounds .
  can be heard as  when preceding a glottal stop .

References 

Nuclear Papuan Tip languages
Languages of Milne Bay Province
D'Entrecasteaux Islands