SN4 ""

No	Pattern	Freq
1	[noun] which might [adv] have	37
2	[noun sg] which might [adv] have	25
3	[noun pl] which might [adv] have	12
4	which [pers pn] might [adv] have	20
5	which [pron] might [adv] have	20
6	which they might [adv] have	8
7	which they might [adv] have	8
8	which he might [adv] have	6
9	which he might [adv] have	6
10	which might [adv] [adv] have	5
11	which might [adv] [adv] have	5
12	which might [adv] have [verb]	28
13	which might [adv] have [vb pp]	26
14	which might [adv] have [be]	24
15	which might [adv] have [been]	24
16	which might [adv] have be	24
17	which might [adv] have been	24
18	which might [adv] have go	6