Table:
married or common-law
single or previously married
difference

percent
percentage points

participation rate

aboriginal population
81.9
68.2
13.7

non-aboriginal population
88.1
83.7
4.4

difference between aboriginal population and non-aboriginal population
-6.2
-15.5
..

employment rate

aboriginal population
75.1
57.8
17.3

non-aboriginal population
84.0
76.9
7.1

difference between aboriginal population and non-aboriginal population
-8.9
-19.1
..

unemployment rate

aboriginal population
8.3
15.2
-6.9

non-aboriginal population
4.6
8.2
-3.6

difference between aboriginal population and non-aboriginal population
3.7
7.0
..

Different merged cells often exist in a table and they can be represented by the JSON {'top-left':(X1, Y1), 'bottom-right':(X2, Y2)}. In this JSON item, '(X1, Y1)' and '(X2, Y2)' 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':(2, 1)}
{'top-left':(2, 2), 'bottom-right':(2, 3)}
{'top-left':(3, 2), 'bottom-right':(3, 4)}
{'top-left':(7, 2), 'bottom-right':(7, 4)}
{'top-left':(11, 2), 'bottom-right':(11, 4)}.