update the gravel sifter xx

_________________________$$$$$$$________________
________________________$$$$$$$$$$______________
________________________$$$$$$$$$$$_____________
_________________________$$$$$$$$$$$$$$_________
__________________________$$$$$$$$$$$___________
_____________________________$$$$$$$$$$$$$______
___________________________$$$$$$$$$$___________
_________________________$$$$$$$$$$$$$$$________
________________$$$______$$$$$$$$$$$$$$_________
______________$$$$$$$$_____$$$$$$__$$$$$________
_____________$$$$$$$$$$_____$$$$____$$$$$_______
___________$$$$$$_$$$$$$$$__$$$$______$$$$______
__________$$$$$_____$$$$$$$$_$$$$_______$$$_____
________$$$$$_________$$$$$$$$$$$$_______$$$____
_______$$$_____________$$$$$$$$$$$________$$$___
_____$$$________________$$$$$$$$$$________$$$$$$
__$$$$$$__________________$$$$$$$_______________