SN4 ""

No	Pattern	Freq
1	[conj] there have [been] [prep]	60
2	[subord] there have [been] [prep]	40
3	[noun] there have [been] [prep]	31
4	[noun sg] there have [been] [prep]	24
5	as there have [been] [prep]	22
6	as there have [been] [prep]	22
7	[that] there have [been] [prep]	14
8	that there have [been] [prep]	14
9	that there have [been] [prep]	14
10	than there have [been] [prep]	13
11	than there have [been] [prep]	13
12	[adv] there have [been] [prep]	7
13	[noun pl] there have [been] [prep]	7
14	[adv] there have [been] [prep]	7
15	[coord] there have [been] [prep]	6
16	and there have [been] [prep]	5
17	year there have [been] [prep]	5
18	and there have [been] [prep]	5
19	there [vb mod] have [been] [prep]	31
20	there [modal v] have [been] [prep]	31
21	there must have [been] [prep]	14
22	there must have [been] [prep]	14
23	there might have [been] [prep]	8
24	there might have [been] [prep]	8
25	there have [adv] [been] [prep]	24
26	there have [adv] [been] [prep]	19
27	there have ever [been] [prep]	5
28	there have n't [been] [prep]	5
29	there have [not/n't] [been] [prep]	5
30	there have also [been] [prep]	5