SN4 ""

No	Pattern	Freq
1	have been [vb pp] [prep] some	469
2	has been [vb pp] [prep] some	201
3	have been [vb pp] by some	145
4	have been [vb pp] by some	145
5	have been [vb pp] in some	119
6	have been [vb pp] in some	119
7	had been [vb pp] [prep] some	105
8	have been [vb pp] for some	101
9	have been [vb pp] for some	101
10	have been [vb pp] [prep] some	86
11	have been [vb pp] [prep] some	41
12	have been [vb pp] to some	32
13	have been [vb pp] to some	32
14	have been [vb pp] with some	28
15	have been [vb pp] with some	28
16	have been [vb pp] at some	22
17	have been [vb pp] at some	22
18	have been known [prep] some	21
19	to have been [vb pp] [prep] some	17
20	have been used [prep] some	15
21	have been found [prep] some	9
22	have been recognised [prep] some	7
23	's been [vb pp] [prep] some	7
24	have been seen [prep] some	7
25	have been established [prep] some	7
26	have been made [prep] some	7
27	have been suggested [prep] some	6
28	have been described [prep] some	6
29	have been adopted [prep] some	5
30	have been argued [prep] some	5