Table:
Domestic	International

September 30,	September 30,

2019	2018	2019	2018

Discount rate	4.00%	3.75%	1.90%	2.80%

Expected return on plan assets	3.40%	3.70%

Rate of compensation increase	- - %	- - %

Could you analyze the table shown in the image and inform me about all the merged cell regions? Use the JSON {'top-left':(X, Y), 'bottom-right':(Z, W)} to represent each merged area, with (X, Y) as the (first row, first column) and (Z, W) as the (last row, last column). Note that the X, Y, Z, W all start from 1.

This table does not contain any merged cells.