Table:
primary care receiver

spouse/partner
child
parent
parent-in-law
other family member
friend, colleague or neighbour

caregiver's age
percent

45 to 54
8.0
12.4
53.3
11.3
4.9
9.1

55 to 64
11.1
7.3
49.4
12.3
9.0
10.6

65 and older
34.1
9.1
16.7
6.1
13.7
20.0

65 to 74
27.8
8.2
24.1
8.0
12.9
18.7

75 and older
46.5
11.0
f
f
15.4
22.6

Here's what I need you to do:
In the image of this table, identify all the merged cells. Provide the coordinates of these merged regions in the JSON {'top-left':(x, y), 'bottom-right':(z, w)}, with '(x, y)' and '(z, w)' indicating the (row_id, column_id) of the top-left and bottom-right cells, respectively. Remember, row and column numbering starts at 1.

The merged cell regions are as follows:
{'top-left':(1, 1), 'bottom-right':(2, 1)}
{'top-left':(1, 2), 'bottom-right':(1, 7)}
{'top-left':(3, 2), 'bottom-right':(3, 7)}.