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90 0 90 1 90 2 90 3 90 4 90 5 90 6 90 7 90 8 90 9 91 0 91 1 91 2 91 3 91 4 91 5 391 390 389 388 387 386 385 384 383 382 381 380 379 378 377

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