区分 くぶん編成 へんせい ほうじゃなかったです
kubunhenseihōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 区分編成法

1. Wasn't distinguishing/categorizing method.; Wasn't a method of differentiation.

Past/Perfective
Negative
Polite
Casual Register
Computing