垂直 すいちょく分業 ぶんぎょうじゃなかったです
suichokubungyōja nakattadesu

Noun
Desu Copula

The polite, past negative form of 垂直分業

1. Wasn't vertically specialized.; Wasn't a vertical division of labor.

Past/Perfective
Negative
Polite
Casual Register