単体 たんたい複体 ふくたいじゃありませんでした
tantaifukutaijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 単体複体

1. It was not a single/double unit.; It wasn't a single/double entity.

Past/Perfective
Negative
Polite
Terminal Form
Mathematics