Duun language
Duun is a Mande language of Mali. There are three varieties of Duun, West Duun, or Duungooma and Banka or Bankagooma, in Mali, and East Duun, or Dzùùn, in Burkina Faso. These are clearly distinct but have a reasonable degree of mutual intelligibility with each other.
Dialects of East Duun, Kpan and Dzùùngoo, are easily intelligible.