__$$$$$___$$$$$$$___$$$$$$$___$$_____$$_
_$_____$__$____$___$$_____$$___$$___$$__
_______$______$____$$_____$$____$$_$$___
____$$$______$_____$$_____$$_____$$$____
_______$____$______$$__$$_$$____$$_$$___
_$_____$____$______$$____$$____$$___$$__
__$$$$$_____$_______$$$$$_$$__$$_____$$_