SN4 ""

No	Pattern	Freq
31	[vb base] there have [adv] been	10
32	[num] there have [adv] been	10
33	years there have [adv] been	9
34	year there have [adv] been	9
35	where there have [adv] been	9
36	where there have [adv] been	9
37	said there have [adv] been	7
38	yet there have [adv] been	7
39	yet there have [adv] been	7
40	[det] there have [adv] been	6
41	as there have [adv] been	6
42	think there have [adv] been	6
43	as there have [adv] been	6
44	though there have [adv] been	6
45	[Wh adv] there have [adv] been	6
46	though there have [adv] been	6
47	[vb infin] there have [adv] been	6
48	since there have [adv] been	5
49	since there have [adv] been	5
50	there [vb mod] have [adv] been	6
51	there [modal v] have [adv] been	6
52	there have [adv] [adv] been	44
53	there have [adv] [adv] been	27
54	there have not [adv] been	17
55	there have [not/n't] [adv] been	17
56	there have not [adv] been	11
57	there have n't [adv] been	6
58	there have only [adv] been	6
59	there have only [adv] been	6
60	there have never [adv] been	5