Oigop'oibauxeu, also commonly known by its Ndak Ta name Bwimbai, is the largest city on the Bwimbai River in Lasomo. Though the town is in the epicenter of the original Ndak homeland, it was not founded until the development of the Ndak Empire.
In post-imperial (i.e. Ndok) times the center of power in Lasomo oscillated between Oigop'oibauxeu and its chief rival Ngahêxôldod. After the conquest of the latter by the Empire of Athalē in 277 YP, Oigop'oibauxeu beat on as the center of Ndok culture, resisting a few invasion attempts, but repeatedly used as a pawn in the struggles between Huyfárah and Athalē.
In the tenth century the city-state led the northern Ndok effort to reconquer southern Lasomo; Ngahêxôldod was taken in 971. A united state of "Lasomo" was proclaimed, which, for a time, Oigop'oibauxeu served as the capital of.
Note: The Ndak called the city by the same name as the river it sits on; later languages are inconsistent with this distinction.
|Ndok Aisô||Oigop'oibauxeu||[ɔj.ɣo.pʰɔjˈβaːw.ʔɛw]||← hon. prefix oi- + NT Bwimbai + baura "great"|
|Adāta||Ziphē||[ziˈpʰeː]||← NT Bwimbai|
|Fáralo||Boíəba||['bɔ̯i.ə.ba]||← NT Bwimbai|
|Buruya Nzaysa||Xopɔváwɛ||[xo.pɔˈva.wɛ]||← N.A. Oigop'oibauxeu (borrowed)|
|Naidda||Obåvawë||[ˈo.bə.va.wɛ]||← B.Nz. Xopɔváwɛ (borrowed)|
|Wippwo||Ouβaβe||[ˈo.βa.βɛ]||← Naidda Obåvawë|
|Æðadĕ||Ojpavaw||[ˈɔj.pʰa.βaw]||← N.A. Oigop'oibauxeu (borrowed)|
|Namɨdu||Bwɨba, Oypawa||[ˈbwɨ.bɐ], [ɔj.ˈpʰa.wɐ]||← F. Boíəba; Æð. Ojpavaw (borrowed)|
|Ayāsthi||Ʒipféjamō, Òıpavoa||[ʒi.ˈpfɛːjɑmɔː], [ˈœ.pa.wɔ]||← Ad. Ʒipfē damō; Æð. Ojpavaw (borrowed)|