門前 もんぜん きよし自摸 つも であれば
monzen kiyoshitsumowadeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 門前清自摸和

1. If/when the front of the gate is clean, self-draw and a win.; If the gate is clean, a self-drawn win.

Ba Conditional
Mahjong