Revert "remove lower insert"
Revert "remove lower insert"

This reverts commit f7b22a9fb5b73846941e904bf50561f234ca837c.

foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm