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

