さるぼうかいじゃなかったです
猿頬貝じゃなかったです
saru bōkaijanakattadesu

Noun
Desu Copula

The polite, past negative form of さるぼうがい

1. Wasn't a sarabo shell.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana