Table:
chronic conditions

arthritis
high blood pressure
asthma
mood disorder
anxiety disorder

percentage

total aboriginal identity female population
22.2
17.2
16.6
16.9
17.0

off-reserve first nations
23.4
17.4
17.5
18.6
17.6

metis
21.3
17.1
16.7
16.2
17.8

inuit
15.2
14.8
9.3
8.2
7.1

non-aboriginal identity female population
14.7
13.1
10.6
10.3
9.4

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':(Z, W)}, where '(X, Y)' and '(Z, W)' 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':(3, 1)}
{'top-left':(1, 2), 'bottom-right':(1, 6)}
{'top-left':(3, 2), 'bottom-right':(3, 6)}.