Table:
Athlete	Event	Heat	Semifinal	Final

Result	Rank	Result	Rank	Result	Rank

Rose Lokonyen	800 m	2:16.64	7	Did not advance

Anjelina Lohalith	1500 m	4:47.38	14	Did not advance

Could you analyze the table shown in the image and inform me about all the merged cell regions? Use the JSON {'top-left':(R1, C1), 'bottom-right':(R2, C2)} to represent each merged area, with (R1, C1) as the (first row, first column) and (R2, C2) as the (last row, last column). Note that the R1, C1, R2, C2 all start from 1.

The merged cell regions are as follows:
{'top-left':(1, 1), 'bottom-right':(2, 1)}
{'top-left':(1, 2), 'bottom-right':(2, 2)}
{'top-left':(1, 3), 'bottom-right':(1, 4)}
{'top-left':(1, 5), 'bottom-right':(1, 6)}
{'top-left':(1, 7), 'bottom-right':(1, 8)}
{'top-left':(3, 5), 'bottom-right':(3, 8)}
{'top-left':(4, 5), 'bottom-right':(4, 8)}.