ぎえぞぼらでわありませんでした
擬蝦夷法螺ではありませんでした
giezo boradewārimasendeshita

Noun
Desu Copula

The polite, past negative form of えぞぼらもどき

1. Was not a false Ezo conch.; Was not an imitation Ezo conch.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana