符号 ふごう反転 はんてん機能 きのうじゃなかったです
fugōhanten kinōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 符号反転機能

1. Wasn't a symbol inversion function.; Didn't have a symbol inversion function.

Past/Perfective
Negative
Polite
Casual Register
Computing