.$$$$$$$..$$$$$$$$..$$$$$$$$..$$.....$$.
.$....$...$$........$$........$$$...$$$.
.....$....$$........$$........$$$$.$$$$.
....$.....$$$$$$....$$$$$$....$$.$$$.$$.
...$......$$........$$........$$.....$$.
...$......$$........$$........$$.....$$.
...$......$$$$$$$$..$$........$$.....$$.