SN4 ""

No	Pattern	Freq
1	[pron] might [adv] have [be]	215
2	[pers pn] might [adv] have [be]	167
3	[noun] might [adv] have [be]	158
4	[noun sg] might [adv] have [be]	98
5	it might [adv] have [be]	71
6	it might [adv] have [be]	71
7	[conj] might [adv] have [be]	45
8	[Wh det] might [adv] have [be]	35
9	he might [adv] have [be]	34
10	he might [adv] have [be]	34
11	[noun pl] might [adv] have [be]	28
12	[adj] might [adv] have [be]	24
13	which might [adv] have [be]	24
14	which might [adv] have [be]	24
15	[noun prp] might [adv] have [be]	23
16	they might [adv] have [be]	22
17	they might [adv] have [be]	22
18	[that] might [adv] have [be]	20
19	that might [adv] have [be]	20
20	that might [adv] have [be]	20
21	she might [adv] have [be]	19
22	she might [adv] have [be]	19
23	[det] might [adv] have [be]	18
24	[coord] might [adv] have [be]	16
25	what might [adv] have [be]	11
26	what might [adv] have [be]	11
27	that might [adv] have [be]	10
28	that might [adv] have [be]	10
29	i might [adv] have [be]	10
30	or might [adv] have [be]	10