しろくちでわありませんでした
白口ではありませんでした
shiroku chidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of しろぐち

1. Was not white-mouthed.; Did not have a pale face.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana