水金すいきん火木かもく天海てんかいめいでしょう
sui kinchikamo kudoten kaimeideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 水金地火木土天海冥

1. Probably water, gold, earth, fire, wood, soil, heaven, and the underworld.

Polite
Presumptive
Conjecture