Improve the grammaticality: The flats built in the past in Singapore were not accessible at every floor as the lifts are built in a way where they stop only at specific levels.
The first floor of the, the second floor of, and the third floor of, the third floor of, and the fourth floor of, are all accessible to the same person.
The second floor of, the third floor of, and, the fourth floor of, are accessible to the same person.
The third floor of, the fourth floor of, and, the fourth floor of, are accessible to the same person.
The first floor is the first floor.
The second floor is the second floor.
The third floor is the third floor.
The last floor is the last floor.
The third floor is the last floor.
The third floor is the third floor.
The second floor is the second floor.
The third floor is the third floor.
The second floor is the second floor.
The third floor is the third floor.
The second floor is the second floor.
The