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21 89 21 90 21 91 21 92 21 93 21 94 21 95 21 96 21 97 21 98 21 99 3744 3743 3742 3741 3740 3739 3738 3737 3736 3735

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