Voiced stops /b, d, ɡ/ may fluctuate to prenasalized stop sounds [ᵐb, ⁿd, ᵑɡ] in word-initial position. The prenasalized stop sounds are also heard among the voiced stops when in post-nasal sequences.
/b/ can be heard as [β] in intervocalic positions, and may also be heard as a voiced bilabial rounded fricative [β̹] when before /a/ in intervocalic positions..
/d/ may occur as flap sounds [ɾ, ɽ, ɺ] in free fluctuation in word-medial positions, except when after a nasal sound.
/d͡z/ may have fluctuating allophones of [d͡ʒ, ʒ] occurring in syllable-initial positions.
Word-final nasal sounds /-n, -ŋ/ when after a vowel, may result in vowel nasalization [Ṽ].
^"Orokaiva". IANA language subtag registry. 29 July 2009. Retrieved 8 February 2019.
Larsen, Robert E. & Marlys Larsen. 1977. Orokaiva phonology and orthography. In Richard Loving (ed.), Phonologies of five P.N.G. languages, 5-28. Ukarumpa: Summer Institute of Linguistics.