SN4 ""

No	Pattern	Freq
1	[noun] had [det] effect	47
2	[noun sg] had [det] effect	28
3	[noun pl] had [det] effect	18
4	[pron] had [det] effect	16
5	[pers pn] had [det] effect	15
6	it had [det] effect	9
7	it had [det] effect	9
8	[adj] had [det] effect	7
9	[adv] had [det] effect	6
10	[adv] had [det] effect	6
11	they had [det] effect	5
12	they had [det] effect	5
13	[det] had [det] effect	5
14	had [art] [det] effect	17
15	had [art] [det] effect	17
16	had the [det] effect	13
17	had the [det] effect	13
18	had [verb] [det] effect	9
19	had [vb pp] [det] effect	8
20	had [adv] [det] effect	7
21	had [adv] [det] effect	7
22	had had [det] effect	6
23	had have [det] effect	6
24	had [det] [adj] effect	26
25	had [det] [adj] effect	24
26	had [det] effect [prep]	51
27	had [det] effect [prep]	51
28	had [det] effect on	37
29	had [det] effect on	37
30	had [det] effect upon	9