だぶりゅうチェックでしょう
Wチェックでしょう
dabu ryūchekkudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of ダブルチェック

1. Probably a check.; Likely to be checked.

Polite
Presumptive
Conjecture
Usually Written in Kana