もんかくつうじゃなかったです
紋殻通じゃなかったです
monkakutsūjanakattadesu

Noun
Desu Copula

The polite, past negative form of もんがらどおし

1. Wasn't familiar with patterns.; Didn't understand the design.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana