SN4 ""

No	Pattern	Freq
1	there have been [adj]	878
2	there have been [adj]	346
3	there has been [adj]	281
4	there had been [adj]	212
5	there have been considerable	94
6	there have been numerous	37
7	there have been other	35
8	there 's been [adj]	25
9	there have been significant	25
10	there have been increasing	23
11	there have been widespread	21
12	there have been great	21
13	there have been various	20
14	there have been major	17
15	there have been extensive	16
16	there have been serious	15
17	there have been growing	15
18	there have been long	11
19	there have been substantial	11
20	there have been frequent	11
21	there have been important	10
22	there have been recent	10
23	there have been sufficient	9
24	there have been dramatic	8
25	there have been regular	8
26	there have been good	8
27	there have been strong	8
28	there have been occasional	8
29	there have been conflicting	7
30	there 've been [adj]	7