みどりいがいじゃなかったです
緑貽貝じゃなかったです
midoriigaijanakattadesu

Noun
Desu Copula

The polite, past negative form of みどりいがい

1. Wasn't a green mussel.; Wasn't green shellfish.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana