前年 ぜんねん同月 どうげつではありませんでした
zennen dōgetsudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 前年同月

1. Was not the same month last year before last.; Was not the same month the year before last.

Past/Perfective
Negative
Polite
Formal Register