SN4 ""

No	Pattern	Freq
1	[verb] [that] they might have	12
2	[noun] [that] they might have	11
3	[noun sg] [that] they might have	7
4	[adj] [that] they might have	7
5	[adj] [that] they might have	7
6	[that] they might [adv] have	12
7	[that] they might [adv] have	7
8	[that] they might not have	5
9	[that] they might [not/n't] have	5
10	[that] they might not have	5
11	[that] they might have [verb]	16
12	[that] they might have [vb pp]	13
13	[that] they might have [been]	8
14	[that] they might have [be]	8
15	[that] they might have been	8
16	[that] they might have be	8
17	[that] they might have [art]	6
18	[that] they might have [art]	6