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40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 3671 3670 3669 3668 3667 3666 3665 3664 3663 3662 3661 3660 3659 3658 3657

= Free Coordinate    = Occupied(Single Region)     = Occupied (Var Region)     = Center of the grid