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51 8 51 9 52 0 52 1 52 2 52 3 52 4 52 5 52 6 52 7 52 8 52 9 53 0 53 1 53 2 53 3 1081 1080 1079 1078 1077 1076 1075 1074 1073 1072 1071 1070 1069 1068 1067

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