CMs with "buried" levers

[RobSeegel]

otg Alpha Mansion, by Olle the Greatest, has 50 rooms, 12 of which are affected:

16499 contains 2 buried levers
16501 contains 1 buried lever
16699 contains 1 buried lever
16900 contains 3 buried levers
16901 contains 2 buried levers
16902 contains 2 buried levers
17097 contains 1 buried lever
17099 contains 1 buried lever
17101 contains 1 buried lever
17299 contains 1 buried lever
17300 contains 2 buried levers
17301 contains 1 buried lever