xx.......xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..x....
xx....x.xxx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xxx..
....xx.x........................................................................x.
....xx..xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.x
....xx.x........................................................................x.
xx....x.xxx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xxx..
xx.......xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..xx..x....