英数字 えうすうじ集合 しゅうごうじゃなかったです
eusūji shūgōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 英数字集合

1. Wasn't alphanumeric.; Wasn't a set of alphanumeric characters.

Past/Perfective
Negative
Polite
Casual Register
Computing