4th Floor: Stairways
4th Floor: Hallways Vertical
4th Floor: Room 401
4th Floor: Room 407
4th Floor: Room 415
4th Floor: Room 414
4th Floor: Room 409
4th Floor: Room 410
4th Floor: Room 411
4th Floor: Room 404
4th Floor: Room 405
4th Floor: Room 406
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