/ɾ/ can be heard as either a tap [ɾ] or a trill [r] in free variation.
/n/ as a homorganic nasal, can be heard as palatal [ɲ] when preceding a palatal or post-alveolar consonant, and as velar [ŋ] when preceding a velar or glottal consonant.
The status of [ɨ] is only heard as an alternate of sounds /i, u/ within speech, as well as its lengthened and nasalized equivalents.
The sounds of /ɛ, ɛ̃, ɛː, ɛ̃ː/ may be heard as more close-mid [e, ẽ, eː, ẽː] across dialects.[4]
References
↑Vadi at Ethnologue (18th ed., 2015) (subscription required)
↑Hammarström, Harald; Forkel, Robert; Haspelmath, Martin (eds.). "Tsuvadi". Glottolog . Jena, Germany: Max Planck Institute for the Science of Human History.