______&&&
____&&__&&
___&&____&
___&&___________________________&&&&&
___&&__________________________&&___&&
___&&____&_____________________&&___&&
____&&__&&__________________&&&&&&&&&&&&
_____&&&&__________________&&____________&&
________________________&&__&&
________________________&&__&&
________________________&&&&&&
________________________&&__&&
________________________&&__&&
________________________________&&__&&&&&&
________________________________&&__&&__&&
________________________________&&&&&&__&&
________________________________&&__&&__&&
________________________________&&__&&&&&&
___________________________________________&&___&&
____________________________________________&&_&&
_____________________________________________&&&
____________________________________________&&_&&
___________________________________________&&___&&
________________________________&&&&
_______________________________&&__&&
______________________________&&____&&
_______________________________&&__&&
________________________________&&&&
___________________&&__&&&&&&
___________________&&__&&__&&
___________________&&&&&&__&&
___________________&&__&&__&&
___________________&&__&&&&&&