たけのこかいじゃなかったです
筍貝じゃなかったです
takenokokaijanakattadesu

Noun
Desu Copula

The polite, past negative form of たけのこがい

1. Wasn't bamboo shoots.; Wasn't scallops.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana