SN4 ""

No	Pattern	Freq
1	[pron] might have been [noun]	65
2	[pers pn] might have been [noun]	46
3	it might have been [noun]	29
4	it might have been [noun]	29
5	[noun] might have been [noun]	16
6	[noun sg] might have been [noun]	12
7	there might have been [noun]	10
8	there might have been [noun]	10
9	[ex0] might have been [noun]	10
10	[conj] might have been [noun]	9
11	[Wh det] might have been [noun]	8
12	they might have been [noun]	7
13	he might have been [noun]	6
14	they might have been [noun]	6
15	[that] might have been [noun]	6
16	he might have been [noun]	6
17	that might have been [noun]	6
18	that might have been [noun]	6
19	what might have been [noun]	5
20	what might have been [noun]	5
21	might [adv] have been [noun]	22
22	might [adv] have been [noun]	17
23	might not have been [noun]	5
24	might once have been [noun]	5
25	might well have been [noun]	5
26	might well have been [noun]	5
27	might [not/n't] have been [noun]	5
28	might once have been [noun]	5
29	might have been [art] [noun]	203
30	might have been [art] [noun]	203