There are three varieties of Duun, West Duun, or Duungooma (also known as Du, Samogho-sien) and Banka or Bankagooma, in Mali, and East Duun, or Dzùùn(goo), in Burkina Faso.
These are clearly distinct but have a reasonable degree of mutual intelligibility with each other.
Dialects of East Duun, Kpan (Kpango, Samoro-guan) and Dzùùngoo (Samogo-iri), are easily intelligible.
The phonology of the Dunn languages contains 26 consonants and 12 vowels.
[2] The following phonemes are in the International Phonetic Alphabet (IPA).