Table:
first quarter
second quarter
third quarter
fourth quarter

statscannabis average price

all cannabis
6.82
6.93
7.09
7.39

of which: legal cannabis
.
.
.
9.70

of which: illegal cannabis
.
.
.
6.51

implicit price indexes

gross domestic product at market prices
107.7
108.0
108.6
107.7

of which: cannabis-related
81.2
81.4
82.6
83.5

of which: other
108.0
108.3
108.9
108.0

implicit price indexes, percentage change

gross domestic product at market prices
0.5
0.3
0.6
-0.8

of which: cannabis-related
1.2
0.2
1.5
1.1

of which: other
0.5
0.3
0.6
-0.8

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':(x, y), 'bottom-right':(m, n)}, where '(x, y)' and '(m, n)' 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 regions 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)}
{'top-left':(10, 2), 'bottom-right':(10, 5)}.