Table:
primary caregiver
total - 65 years and over
65 to 74 years
75 to 84 years
85 years and over

women
men
women
men
women
men
women
men

percentage

total
100
100
100
100
100
100
100
100

spouse
19
60
36
71
20
63
f
36

son
19
10
17
7
20
11
20
15

daughter
42
15
20
f
44
11
57
33

close friend
4
4
6
f
5
f
f
f

other family member, friend, or acquaintance
16
10
21
8
11
12
17
f

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 areas are as follows:
{'top-left':(1, 1), 'bottom-right':(3, 1)}
{'top-left':(1, 2), 'bottom-right':(1, 3)}
{'top-left':(1, 4), 'bottom-right':(1, 5)}
{'top-left':(1, 6), 'bottom-right':(1, 7)}
{'top-left':(1, 8), 'bottom-right':(1, 9)}
{'top-left':(3, 2), 'bottom-right':(3, 9)}.