四百 よんひゃく よん びょう そとじゃなかったです
yonhyakuyombyōno sotojanakattadesu

Noun
Desu Copula

The polite, past negative form of 四百四病の外

1. Wasn't 404 disease.; Wasn't a 404 error.

Past/Perfective
Negative
Polite
Casual Register