Table:
first quarter
second quarter
third quarter
fourth quarter

millions of dollars

gross domestic product at market prices
2,194,432
2,214,392
2,238,188
2,223,144

of which: cannabis-related
6,620
7,139
7,692
8,636

of which: other
2,187,812
2,207,253
2,230,496
2,214,314

percentage change

gross domestic product at market prices
0.5
0.6
0.8
0.1

of which: cannabis-related
5.2
7.6
6.2
10.7

of which: other
0.5
0.6
0.7
0.1

The task is as follows:
Analyze the table in this image to find every merged cell. Return the regions of these merged cells in the JSON {'top-left':(A, B), 'bottom-right':(C, D)}, where '(A, B)' and '(C, D)' show the (row_id, column_id) of the top-left and bottom-right cells in these regions, respectively. The row and column IDs start from 1.

The merged cell areas are as follows:
{'top-left':(1, 1), 'bottom-right':(2, 1)}
{'top-left':(2, 2), 'bottom-right':(2, 5)}
{'top-left':(6, 2), 'bottom-right':(6, 5)}.