拡張 かくちょう ゆうEF いうえふじゃなかったです
kakuchōyūiuefujanakattadesu

Noun
Desu Copula

The polite, past negative form of 拡張UEF

1. Wasn't extended UE; Wasn't an extended UE

Past/Perfective
Negative
Polite
Casual Register
Computing