Where does “rua” come from?

rua (Proto-Nuclear Polynesian) comes 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-Polynesianruatwo
2Proto-Oceanicruatwo
3Proto-Eastern Malayo-Polynesianduha—
4Proto-Central-Eastern Malayo-Polynesianduha—
5Proto-Malayo-Polynesianduhatwo
6Proto-Austronesian*duha—
7Proto-AustronesianduSatwo

Words derived from “rua”

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