あかちくしかもじゃなかったです
赤筑紫鴨じゃなかったです
akachikushika moja nakattadesu

Noun
Desu Copula

The polite, past negative form of あかつくしがも

1. Wasn't a red duck.; Wasn't Akatsukishi (a place/name).

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana