←
Proto-Austronesian *(i-)aku (inherited)←
Proto-Central-Eastern Malayo-Polynesian *(i-)aku (derived)←
Proto-Oceanic *(i-)au (inherited)←
Proto-Polynesian *au (inherited)←
Proto-Polynesian *qau (inherited)←
Proto-Malayo-Polynesian *(i-)aku (inherited)←
Proto-Malayo-Polynesian *qaʀus (inherited)←
Proto-Eastern Malayo-Polynesian *(i-)aku (inherited)