せきしゅかにじゃありませんでした
赤手蟹じゃありませんでした
sekishukanijārimasendeshita

Noun
Desu Copula

The polite, past negative form of あかてがに

1. Was not a red king crab.; Was not a Japanese spider crab.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana