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53 1 53 2 53 3 53 4 53 5 53 6 53 7 53 8 53 9 54 0 54 1 1170 1169 1168 1167 1166 1165 1164 1163 1162 1161

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