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20 92 20 93 20 94 20 95 20 96 20 97 20 98 20 99 21 00 21 01 21 02 21 03 21 04 21 05 21 06 21 07 58637 58636 58635 58634 58633 58632 58631 58630 58629 58628 58627 58626 58625 58624 58623

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