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87 54 87 55 87 56 87 57 87 58 87 59 87 60 87 61 87 62 87 63 87 64 6727 6726 6725 6724 6723 6722 6721 6720 6719 6718

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