カルコゲンなら
karukogennara
1. If/when chalcogen
Noun
#159748
1. If/when chalcogen
1. chalcogen
1. Wasn't a chalcogen.
1. It's not a chalcogen.
1. Is not a chalcogen.
1. Was not a chalcogen.
1. It was a chalcogen.
1. Was a chalcogen.
1. It is not a chalcogen.
1. Wasn't a chalcogen.