Revert "C3"

This reverts commit fa055131f5878c9970f357170bd29b5f9f02ee2a.
Revert "C2"

This reverts commit c46c15bf7190771f3c57a69eb30a781b260ec8f9.
Revert "C1"

This reverts commit e67519d9679b352d437d6706c152dbc8fba1714f.