あかえうじゃありませんでした
赤エイじゃありませんでした
aka e uja arimasendeshita

Noun
Desu Copula

The polite, past negative form of あかえい

1. It was not red.; It wasn't a red horse/stingray.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana