うむしゅむこっぱいじゃないです
宇牟須牟骨牌じゃないです
umu shumukoppaijanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of うんすんかるた

1. It's not umusumu bone dominoes.

Negative
Polite
Casual Register
Usually Written in Kana