Mengen language explained

Mengen and Poeng are rather divergent dialects of an Austronesian language of New Britain in Papua New Guinea.

Phonology

Both palatalization and labialization pronounced as /[ʲ, ʷ]/ is said to occur in all consonants. Palatalized consonants only occur before back vowels, and labialized consonant sounds may occur before all vowels accept pronounced as //u//.
pronounced as //k// is typically pronounced as uvular pronounced as /[q]/, but can also be heard as a velar pronounced as /[k]/ in free variation.
Gemination or length, may also occur among consonant sounds.
Sounds pronounced as //b, ɡ// are pronounced as voiced stops pronounced as /[b, ɡ]/, but are also heard as fricatives pronounced as /[β, ɣ]/ in intervocalic position.
pronounced as //r// may have variation between a trill pronounced as /[r]/, a tap pronounced as /[ɾ]/, or a voiced stop pronounced as /[d]/ within vocabulary.
Sounds pronounced as //j, w// are said to exist as a result of palatalization or labialization, but only in very few root words in word-initial position.

Sounds pronounced as //a, o// are raised to pronounced as /[ʌ, o̝]/ within the environment of consonant length.^[1]

Book: Rath, Daniel D. . Mengen phonology essentials . Ukarumpa: Summer Institute of Linguistics . 1993 . John M. Clifton (ed.), Phonologies of Austronesian languages 2 . 71–98.