主要 しゅよう 終端 しゅうたん がたでしょう
shu yōbushūtangatadeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 主要部終端型

1. Probably the main part is terminal-type.; Likely the primary section is end-type.

Polite
Presumptive
Conjecture