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18 21 18 22 18 23 18 24 18 25 18 26 18 27 18 28 18 29 18 30 18 31 18 32 18 33 18 34 18 35 18 36 18 37 18 38 18 39 18 40 18 41 18 42 18 43 1389 1388 1387 1386 1385 1384 1383 1382 1381 1380 1379 1378 1377 1376 1375 1374 1373 1372 1371 1370 1369 1368

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