固有 こゆう文字 もじ集合 しゅうごうではありませんでした
koyūmo jishū gōdewa arimasendeshita

Noun
Desu Copula

The polite, past negative form of 固有文字集合

1. Was not a fixed character set.; Was not a native character set.

Past/Perfective
Negative
Polite
Formal Register
Computing