___________$$$$$______$$$$__$$$$
___________$$________$$__$$_____$
___________$$___________$$___$$$
___________$$__________$$_______$
___________$$$$$_____$$$$$$_$$$$
_________________________________________________
__$$$$$$__$$$$$_$$$$__$$$$___$$_____$$$$____$$$$_
_$__$$__$_$$____$$__$_$$__$_$__$___$$__$$__$__$$_
__$$$$$$__$$$$__$$$$__$$$$_$$$$$$__$$__$$___$$$$_
____$$____$$____$$__$_$$___$$__$$__$$__$$__$$_$$_
____$$____$$$$$_$$$$__$$___$$__$$_$$$__$$_$$__$$_