----------------------                       
            00                                   <>       
          00                                    <++>      
        00                                     [+  +]     
---------                                      [    ]     
0         o        00------                 O  [ 7  ]     
0  S     /|\     00       0                    [    ]     
0        / \   00         0            ---------------    
----------------          0             H  0              
                          0             H  0              
                          0             H  0              
                          0             H  0              
                          0~~~~~~0---------0              
                          00000000