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

