コロンバイン高校 こうこう じゅう乱射 らんしゃ事件 じけんだったら
korombainkōkōjū ranshajikendattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of コロンバイン高校銃乱射事件

1. If the Columbine High School massacre…; Had the Columbine High School massacre happened…; Were the Columbine High School massacre to happen…

Tara Conditional