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