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21 4 21 5 21 6 21 7 21 8 21 9 22 0 22 1 22 2 22 3 22 4 22 5 22 6 22 7 22 8 22 9 38482 38481 38480 38479 38478 38477 38476 38475 38474 38473 38472 38471 38470 38469 38468

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