うらじろはこやなぎだったら
裏白箱柳だったら
urajirohakoyanagidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of うらじろはこやなぎ

1. If it were a hidden, white willow:; If it had been a hidden, white willow:

Tara Conditional
Usually Written in Kana