曽祖 そうそ父母 ふぼじゃなかったです
sōsofubojanakattadesu

Noun
Desu Copula

The polite, past negative form of 曽祖父母

1. Wasn't great-grandparents.; Wasn't a great-grandparent.

Past/Perfective
Negative
Polite
Casual Register