SN4 ""

No	Pattern	Freq
1	might have [verb] a	316
2	might have [verb] a	312
3	might have [vb pp] a	289
4	might have have a	62
5	might have had a	60
6	might have make a	31
7	might have made a	28
8	might have [to-vb] a	27
9	might have get a	12
10	might have got a	12
11	might have become a	10
12	might have become a	10
13	might have take a	6
14	might have do a	6
15	might have produce a	5
16	might have done a	5
17	might have seem a	5
18	might have produced a	5
19	might have seemed a	5