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90 57 90 58 90 59 90 60 90 61 90 62 90 63 90 64 90 65 90 66 90 67 6237 6236 6235 6234 6233 6232 6231 6230 6229 6228

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