Floor: 0
O-O-O-O-C
|   |   | 
O-O-O-O-C
|   | | | 
O-O-O-O-C
        | 
I-C-C-C-E
  | | | | 
O-O O-O C
     
Floor: 1
O-O O-O C
  | | | | 
O O O O C
| | | | | 
O-O-O-O C
      | | 
C-C-C-C-E
  |     | 
O-O-O-O C
     

