_$________$$$$$$$$___$$_____$$__$$$$$$$$_
_$____$___$$_____$$___$$___$$________$$__
_$____$___$$_____$$____$$_$$________$$___
_$____$___$$$$$$$$______$$$________$$____
_$$$$$$$__$$___$$______$$_$$______$$_____
______$___$$____$$____$$___$$____$$______
______$___$$_____$$__$$_____$$__$$$$$$$$_