Table:
industry
mnes' share of assets
type
assets

%
$ millions

construction
18.6
mnes
3.80

domestic enterprises
0.13

distributive trade
60.8
mnes
6.90

domestic enterprises
0.22

extraction
85.2
mnes
14.40

domestic enterprises
0.16

finance
72.8
mnes
3.41

domestic enterprises
0.57

manufacturing
86.5
mnes
19.52

domestic enterprises
0.24

real estate
33.0
mnes
3.27

domestic enterprises
0.54

transportation and warehousing
62.3
mnes
6.43

domestic enterprises
0.05

utilities
53.2
mnes
17.34

domestic enterprises
0.29

Please perform the following task:
Examine the provided table image to identify all cells that are merged. Report back the merged cell areas using the JSON {'top-left':(x, y), 'bottom-right':(z, w)}, where '(x, y)' represents the top-left and '(z, w)' the bottom-right cell's (row_id, column_id) in each merged region. Note that both row and column IDs begin at 1.

The merged cell regions are as follows:
{'top-left':(1, 1), 'bottom-right':(2, 1)}
{'top-left':(1, 3), 'bottom-right':(2, 3)}
{'top-left':(3, 1), 'bottom-right':(4, 1)}
{'top-left':(3, 2), 'bottom-right':(4, 2)}
{'top-left':(5, 1), 'bottom-right':(6, 1)}
{'top-left':(5, 2), 'bottom-right':(6, 2)}
{'top-left':(7, 1), 'bottom-right':(8, 1)}
{'top-left':(7, 2), 'bottom-right':(8, 2)}
{'top-left':(9, 1), 'bottom-right':(10, 1)}
{'top-left':(9, 2), 'bottom-right':(10, 2)}
{'top-left':(11, 1), 'bottom-right':(12, 1)}
{'top-left':(11, 2), 'bottom-right':(12, 2)}
{'top-left':(13, 1), 'bottom-right':(14, 1)}
{'top-left':(13, 2), 'bottom-right':(14, 2)}
{'top-left':(15, 1), 'bottom-right':(16, 1)}
{'top-left':(15, 2), 'bottom-right':(16, 2)}
{'top-left':(17, 1), 'bottom-right':(18, 1)}
{'top-left':(17, 2), 'bottom-right':(18, 2)}.