Table:
b69 Vanderbilt Avenue Line

System	MTA Regional Bus Operations
Operator	New York City Transit Authority
Garage	Jackie Gleason Depot
Began service	1869
Ended service	August 20th, 1950 (Trolley)
Locale	Brooklyn
Communities served	Kensington, Park Slope, Clinton Hill, Dumbo
Start	Kensington –Cortelyou Road and McDonald Avenue
Via	McDonald Avenue, 7th Avenue, Vanderbilt via Brooklyn Navy Yard
End	Downtown Brooklyn –Sands Street / York Street station
Operates	All times except late nights
Annual patronage	1,258,471 (2017)
Transfers	Yes

The task is as follows:
Analyze the table in this image to find every merged cell. Return the regions of these merged cells in the JSON {'top-left':(x, y), 'bottom-right':(z, w)}, where '(x, y)' and '(z, w)' show the (row_id, column_id) of the top-left and bottom-right cells in these regions, respectively. The row and column IDs start from 1.

The merged cell region is: {'top-left':(1, 1), 'bottom-right':(1, 2)}.