Table:
Team

From

To

Regular season record

Postseason record

W

L

Win %

W

L

Win %

Chicago White Sox

1979

1986

522
510
.506

1
3
.250

Oakland Athletics

1986

1995

798
673
.542

19
13
.594

St. Louis Cardinals

1996

2011

1408
1182
.544

50
42
.543

Total

2728
2365
.536

70
58
.547

Reference:[17]

Examine the table in this image and extract any merged cell regions. Please format the merged cell regions as JSON {'top-left':(x, y), 'bottom-right':(m, n)}, with (x, y) indicating the (row_id, column_id) of the top-left cell and (m, n) the bottom-right cell in the merged regions. Remember that the x, y, m, n all start from 1.

The merged cell regions are as follows:
{'top-left':(1, 1), 'bottom-right':(2, 1)}
{'top-left':(1, 2), 'bottom-right':(2, 2)}
{'top-left':(1, 3), 'bottom-right':(2, 3)}
{'top-left':(1, 4), 'bottom-right':(1, 6)}
{'top-left':(1, 7), 'bottom-right':(1, 9)}
{'top-left':(6, 1), 'bottom-right':(6, 3)}
{'top-left':(7, 1), 'bottom-right':(7, 9)}.