Table:
men
women

dollars

total median wage and salary income
58,176
37,117

less than secondary school
39,727
25,393

secondary school diploma or equivalent
52,516
30,519

some postsecondary
51,427
27,178

postsecondary certificate or diploma below bachelor's level
63,687
36,563

university certificate, diploma or degree
71,104
57,842

The picture contains a table. You task is to identify any merged cells in this table, and output the scope of each merged cell using the JSON format of {'top-left':(x, y), 'bottom-right':(m, n)}. The row id and column id should start from 1.

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