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81 02 81 03 81 04 81 05 81 06 81 07 81 08 81 09 81 10 81 11 81 12 81 13 81 14 81 15 81 16 81 17 58457 58456 58455 58454 58453 58452 58451 58450 58449 58448 58447 58446 58445 58444 58443

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