Table:
primary donors
other donors
non-donors

percentage

total
100
100
100

men
53
48
55

women
47
52
45

age group

15 to 34 years
15
31
47

35 to 54 years
34
36
27

55 years and older
51
34
26

level of education

less than a high school diploma
5
9
20

high school diploma
19
27
30

postsecondary diploma or certificate
29
36
27

university degree
46
28
22

household income quintile

lowest quintile
13
19
29

second quintile
16
20
22

third quintile
18
20
19

fourth quintile
22
20
17

highest quintile
30
20
14

personal income quintile

lowest quintile
8
19
32

second quintile
14
19
27

third quintile
19
21
17

fourth quintile
22
21
15

highest quintile
36
21
10

participation in religious activities

does not participate in religious activities at least once a week
46
86
92

participates in religious activities at least once a week
54
14
8

This image shows a table. Determine whether this table contains merged cells and output merged cell regions with the JSON format of {'top-left':(A, B), 'bottom-right':(C, D)}, where A, B, C and D represent the indices of the first row, the first column, the last row, and the last column in the merged region. Row and column indices are numberd from 1.

The merged cell regions are as follows:
{'top-left':(1, 1), 'bottom-right':(2, 1)}
{'top-left':(2, 2), 'bottom-right':(2, 4)}
{'top-left':(6, 2), 'bottom-right':(6, 4)}
{'top-left':(10, 2), 'bottom-right':(10, 4)}
{'top-left':(15, 2), 'bottom-right':(15, 4)}
{'top-left':(21, 2), 'bottom-right':(21, 4)}
{'top-left':(27, 2), 'bottom-right':(27, 4)}.