Where does “rua” come from?

rua (Proto-Eastern Polynesian) comes from Proto-Nuclear Polynesian rua, from Proto-Polynesian rua, from Proto-Oceanic rua, from Proto-Eastern Malayo-Polynesian duha, from Proto-Central-Eastern Malayo-Polynesian duha, from Proto-Malayo-Polynesian duha, from Proto-Austronesian *duha, from Proto-Austronesian duSa — two.

Ancestry of “rua”, step by step

StepLanguageWordMeaning
1Proto-Nuclear Polynesianrua—
2Proto-Polynesianruatwo
3Proto-Oceanicruatwo
4Proto-Eastern Malayo-Polynesianduha—
5Proto-Central-Eastern Malayo-Polynesianduha—
6Proto-Malayo-Polynesianduhatwo
7Proto-Austronesian*duha—
8Proto-AustronesianduSatwo

Words derived from “rua”

Every word from Proto-Austronesian duSa →Every word from Proto-Austronesian *duha →Every word from Proto-Malayo-Polynesian duha →