かばのあなきのこじゃなかったです
樺のあな茸じゃなかったです
kabano anakinokojanakattadesu

Noun
Desu Copula

The polite, past negative form of かばのあなたけ

1. Wasn't a birch bolete.; Wasn't a birch polypore.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana