Table:
source country
household
census family

average number of people per household
proportion of households with only one person
average number of children aged 0 to 14 among couples with children
proportion of couples with children in the family
proportion of persons living outside a census family

number
percent
number
percent

syria
4.8
3.6
2.8
85.4
4.2

iraq
4.0
13.4
2.0
74.1
9.6

afghanistan
5.4
3.0
2.4
71.8
3.5

eritrea
3.5
9.8
2.2
62.0
25.3

democratic republic of the congo
4.4
14.3
3.0
46.5
25.7

other countries
3.7
13.4
2.2
58.4
21.6

total, excluding syria
4.0
12.0
2.2
63.2
18.0

total
4.4
7.1
2.6
77.2
9.5

A table may have multiple merged cells and we can represent a merged cell region by a JSON {'top-left':(A, B), 'bottom-right':(C, D)}. Here, '(A, B)' and '(C, D)' denote the coordinates (row_id, column_id) of the top-left and bottom-right cells of the merged regions, respectively. Now, based on the shown table image, please find all merged cells in this table and return their representations in the above format. Keep in mind that row and column IDs start from 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, 6)}
{'top-left':(3, 5), 'bottom-right':(3, 6)}.