かぶとがにじゃありませんでした
兜蟹じゃありませんでした
kabutoganijārimasendeshita

Noun
Desu Copula

The polite, past negative form of かぶとがに

1. Was not a crab.; Was not carrying a crab.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana