竦林 すくみり檎貝 んごがいであれば
sukumi ringogaideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 竦林檎貝

1. If/When it is a *susuri-ringo-kai* (a type of clam); If it were a *susuri-ringo-kai* (a type of clam)

Ba Conditional