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12 0 12 1 12 2 12 3 12 4 12 5 12 6 12 7 12 8 12 9 13 0 13 1 13 2 13 3 13 4 13 5 11456 11455 11454 11453 11452 11451 11450 11449 11448 11447 11446 11445 11444 11443 11442

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