Table:
number
percentage points

devitalization factors

non-transmission of mother tongue
-7,075
-23.4

complete language transfers
-630
-2.1

total losses
-7,705
-25.5

mitigating factors

knowledge of mother tongue without using it at home
475
1.6

use of inuktut at home among inuit who do not report it as mother tongue
3,445
11.4

main use
525
1.7

secondary use
2,920
9.7

secondary speakers
450
1.5

total mitigating factors
4,370
14.5

mitigating factors

transmission of inuit mother tongue to non-inuit
105
0.3

use of inuktut at home among non-inuit who do not report it as mother tongue
225
0.7

secondary speakers
130
0.4

total mitigating factors
460
1.5

sum of mitigating factors
4,830
16.0

sum of devitalization factors and mitigating factors
-2,875
-9.5

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':(X1, Y1), 'bottom-right':(X2, Y2)}, where '(X1, Y1)' and '(X2, Y2)' 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':(2, 2), 'bottom-right':(2, 3)}
{'top-left':(6, 2), 'bottom-right':(6, 3)}
{'top-left':(13, 2), 'bottom-right':(13, 3)}.