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21 01 21 02 21 03 21 04 21 05 21 06 21 07 21 08 21 09 21 10 21 11 21 12 21 13 21 14 21 15 21 16 58656 58655 58654 58653 58652 58651 58650 58649 58648 58647 58646 58645 58644 58643 58642

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