以夷 いい こう えびすじゃありませんでした
iikō ebisujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 以夷攻夷

1. It wasn't attacking barbarians with barbarians.; It wasn't using barbarians to attack barbarians.

Past/Perfective
Negative
Polite
Terminal Form