マーク区間 くかん宣言 せんげんじゃなかったです
mākukukansengenjanakattadesu

Noun
Desu Copula

The polite, past negative form of マーク区間宣言

1. Wasn't marking range declaration.; Didn't declare the marking range.

Past/Perfective
Negative
Polite
Casual Register
Computing