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The Nunusaku languages are a group of Malayo-Polynesian languages, spoken on and around the island of Seram, Indonesia. None of the languages have more than about twenty thousand speakers, and several are endangered with extinction.
The proto-language, Proto-Nunusaku, merged Proto-Malayo-Polynesian*z/*d as *d, and *l/*R/*j as *l.
Zobel, Erik (2024). "Historical linguistics of the Central Malayo-Polynesian languages". In Alexander Adelaar; Antoinette Schapper (eds.). The Oxford Guide to the Malayo-Polynesian Languages of Southeast Asia. Oxford University Press. pp. 151–164. doi:10.1093/oso/9780198807353.003.0012.