L1 users: 7,800 (Lynch and Crowley 2001).
Penama province: central Pentecost (Raga).
Asuk (Asa, Asu), Suru Mwerani, Suru Rabwanga (Suru Bo), Suru Kavian, Wolwolan (Volvoluana).
Latin script [Latn].
Suru Kavian dialect is referred to in some sources as a dialect of Namaram, though no longer the major dialect spoken there; Bwatnapni village dialect is a mixture of Suru Mwerani and Suru Rabwanga; Asuk and Wolwolan dialects are extinct or poorly known.