Table:
Date

Site of caucus

County

Mitt
Romney

Ron Paul

Rick
Santorum

Newt
Gingrich

Un-
decided

Total votes

references

Feb. 16
Rome
Kennebec
1
3
2
1
-
7
[17]

Feb. 18
East Machias
Washington
80
163
57
4
2
306
[18][19]

Feb. 18
Danforth
Washington
6
4
2
1
-
13
[18]

Feb. 18
Clinton
Kennebec
2
4
-
-
-
6
[19][20][23]

Feb. 18
Hancock
Hancock
16
41
17
8-9 *
-
82-83
[19][20][22]

Feb. 18
Eastbrook
Hancock
7
19
8
-
-
34
[19][20][22]

Subtotals (February 16–18)
112
234
86
14-15
2
448-449

March 3
Castine
Hancock
held but not yet reported
[5][21]

* (see the discussion above of the Hancock caucus totals)

From the provided table image, locate any cells that are merged and list their regions as {'top-left':(x, y), 'bottom-right':(m, n)}, with (x, y) indicating the (row_id, column_id) of top-left cell and (m, n) the bottom-right cell. Both the row_id and column_id 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, 5)}
{'top-left':(1, 6), 'bottom-right':(1, 7)}
{'top-left':(1, 8), 'bottom-right':(1, 9)}
{'top-left':(1, 10), 'bottom-right':(2, 10)}
{'top-left':(4, 1), 'bottom-right':(5, 1)}.