north: 220542
south: 220528
east: 638492
west: 638478
rows: 7
cols: 7
3 5 5 5 5 5 * 
2 2 5 5 5 5 4 
1 4 4 5 5 5 4 
4 4 4 4 5 5 5 
4 4 2 4 2 2 2 
4 4 2 2 2 2 2 
1 1 1 1 2 2 2