よろい土竜 もぐら蜚蠊ではありませんでした
yoroimoguradewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 鎧土竜蜚蠊

1. Was not an armadillo, dragonfly, or cockroach.

Past/Perfective
Negative
Polite
Formal Register