Table:
age group
women
men

visible minority
not a visible minority
visible minority
not a visible minority

percentage

total age groups
27.7
29.5
16.8
15.2

15 to 24
66.2
61.1
57.2
46.5

25 to 54
20.1
20.3
9.2
6.2

55 to 64
22.7
29.7
11.3
12.9

65 and over
46.9
56.7
32.5
39.4

Different merged cells often exist in a table and they can be represented by the JSON {'top-left':(x, y), 'bottom-right':(z, w)}. In this JSON item, '(x, y)' and '(z, w)' are the (row_id, column_id) coordinates for the top-left and bottom-right cells in the merged region, respectively. Please examine the provided table image, identify all merged cells, and return their details using the above-mentioned format. Remember, the numbering for both rows and columns starts at 1.

The merged cell regions 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':(3, 2), 'bottom-right':(3, 5)}.