半角 はんかく英数字 えうすうじじゃありませんでした
hankakueusūjija arimasendeshita

Noun
Desu Copula

The polite, past negative form of 半角英数字

1. Was not a half-width alphanumeric character.; Was not an alphanumeric character in half-width form.

Past/Perfective
Negative
Polite
Terminal Form
Computing