         ll                O               ;x                O       ll         
         ll                O               ;x                O       ll         
         ll                O               ;x                O       ll         
         ll                O               ;x                O       ll         
         ll                O               ;x                O       ll         
         ll                O               ;x                O       ll         
         ll                O               ;x                O       ll         
         ll                O               ;x                O       ll         
         ll                O               ;x                O       ll         
         ll                O               ;x                O       ll         
         ll                O               ;x                O       ll         
         ll                O               ;x                O       ll         
         ll                O               ;x                O       ll         
         ll                O               ;x                O       ll         
cccccccccxxcccccccc        0cccccccccccccccoOcccccccccccccccc0cccccccxxccccccccc
         ll       O                                                  ll         
.........oo.......O............................       ...............oo.........
:::::::::dd::::::::::::::::::::::::::::::::::::'     .;::::::::::::::dd:::::::::
         ll                                                          ll         
cccccccccxl          .Occccccccccccccccxxccccccccccccccccccccccccccccxl         
         ll           O                ll                            ll         
         ll           O                ll                            ll         
         ll           O                ll                            ll         
         ll           O                ll                            ll         
         ll           O                ll                            ll         
         ll           O                ll                            ll         