SN4 ""

No	Pattern	Freq
1	have been [vb pp] in this	202
2	has been [vb pp] [prep] this	196
3	have been [vb pp] [prep] this	172
4	had been [vb pp] [prep] this	99
5	have been [vb pp] by this	59
6	have been [vb pp] to this	59
7	have been [vb pp] for this	55
8	have been [vb pp] [prep] this	41
9	have been [vb pp] on this	34
10	have been made [prep] this	30
11	to have been [vb pp] [prep] this	26
12	have been [vb pp] from this	25
13	have been [vb pp] with this	18
14	have been [vb pp] into this	15
15	have been [vb pp] of this	14
16	have been given [prep] this	13
17	have been written [prep] this	13
18	have been done [prep] this	13
19	have been [vb pp] under this	12
20	have been [vb pp] about this	12
21	have been used [prep] this	12
22	have been [vb pp] at this	11
23	having been [vb pp] [prep] this	10
24	have been said [prep] this	10
25	have been developed [prep] this	8
26	have been included [prep] this	8
27	have been described [prep] this	7
28	's been [vb pp] [prep] this	7
29	have been treated [prep] this	7
30	have been omitted [prep] this	6