Table:
For the years ended

October 31, 2019	October 31, 2018	October 31, 2017

Net income	$53,294	$61,431	$279,745

Distributed and undistributed (earnings) to unvested restricted	(778)	(878)	(4,285)

Distributed and undistributed earnings to common shareholders -- Basic	52,516	60,553	275,460

Weighted average shares outstanding — Basic	21,829	22,429	22,393

Weighted average shares outstanding — Diluted	21,829	22,429	22,393

Earnings per common share — Basic	$2.41	$2.70	$12.30

Earnings per common share — Diluted	$2.41	$2.70	$12.30

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':(m, n)}, where '(x, y)' and '(m, n)' 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.

This table does not contain any merged cells.