North Bougainville
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Keriaka (1)
- Ramopa [kjx] (A language of Papua New Guinea)
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Konua (1)
- Rapoisi [kyx] (A language of Papua New Guinea)
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Rotokas (2)
- Askopan [eiv] (A language of Papua New Guinea)
- Rotokas [roo] (A language of Papua New Guinea)