西洋 せいよう骨牌 こっぱいじゃなかったです
seiyōkoppaijanakattadesu

Noun
Desu Copula

The polite, past negative form of 西洋骨牌

1. Wasn't a Western domino.; Wasn't a Western-style domino.

Past/Perfective
Negative
Polite
Casual Register