SN4 ""

No	Pattern	Freq
1	[noun] have [adj] impact	7
2	[noun pl] have [adj] impact	5
3	have [art] [adj] impact	48
4	have [art] [adj] impact	48
5	have a [adj] impact	40
6	have a [adj] impact	35
7	have [adv] [adj] impact	8
8	have [adv] [adj] impact	8
9	have [verb] [adj] impact	7
10	have [vb pp] [adj] impact	7
11	have had [adj] impact	6
12	have have [adj] impact	6
13	have [adj] [adj] impact	6
14	have an [adj] impact	5
15	have the [adj] impact	5
16	have [det] [adj] impact	5
17	have the [adj] impact	5
18	have [adj] [adj] impact	6
19	have [adj] [adj] impact	5
20	have [adj] impact [prep]	14
21	have [adj] impact [prep]	14
22	have [adj] impact on	12
23	have [adj] impact on	12