系統 けいとう べつ総当 そうあたりでしょう
keitōbetsusōatarideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 系統別総当り

1. Probably exhaustive, systematically.; Probably a complete sweep.

Polite
Presumptive
Conjecture
Sumo