Yaqay language
Yaqay (Yakhai, Yaqai, Jakai, Jaqai) is a Papuan language spoken in Indonesia by over 10,000 people. It is also called Mapi or Sohur; dialects are Oba-Miwamon, Nambiomon-Mabur, Bapai. According to Ethnologue, Yaqay is spoken along the south coast of Mappi Regency, along the Obaa River north to the Gandaimu area. Phonology
The following is the phonology of Yaqay, as defined in . Consonants 

  and  are both dental consonants, while  and  are alveolar consonants. is a postalveolar consonant while  is palatal. seems to be an allophone of  found before velar consonants, like in the word   (it is unclear whether the sequence  is pronounced , , or just , but it seems to most likely be ). The letter 'k' is only found at the beginning of words or at the end of syllables. At the beginning of a word, it's pronounced like  (or , see later notes), while at the end of syllables, it's pronounced , for example, in the word  , meaning 'walking'. , represented by , is pronounced like  in some words, for example,  , meaning 'spear'. is pronounced like  in some words, for example,  , meaning 'smelling'. The original source makes it unclear whether  is the voiceless glottal fricatives  or a voiced glottal stop , but it is most likely the voiceless glottal fricative . Consonant Distribution

 'Y' means that the consonant on the left of the row occurs in the word position at the top of the column. For instance, this section of the table:

 means that the consonant  can be found at the beginning and center of a word, but not at the end of one. Vowels

  and  are sometimes considered to be the same phoneme as  and  respectively, while others consider them as separate phonemes that are in free variation. Vowel Distribution

 A pattern can be seen here wherein front vowels  can all only occur at the beginning of syllables, while the back vowels  can only occur at the ends of syllables. Syllable Structure

The syllable structure is not explicitly stated, but it appears to be:
Maximum syllable structure: CVNC, as in the word, , meaning 'squat'. Minimum syllable structure: CV, as in the word, , meaning, 'hole'. References

Kriens, Ron and Randy Lebold. 2010. Report on the Wildeman River Survey in Papua, Indonesia. SIL International. External links 
Yakhai. New Guinea World. Marind–Yaqai languages
Languages of Indonesia