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