SN4 ""

No	Pattern	Freq
1	have been [vb pp] in [det]	679
2	has been [vb pp] in [det]	272
3	have been [vb pp] in this	202
4	have been [vb pp] in [det]	197
5	have been [vb pp] in some	119
6	had been [vb pp] in [det]	98
7	have been [vb pp] in [det]	64
8	have been [vb pp] in many	58
9	have been [vb pp] in that	47
10	have been [vb pp] in several	46
11	have been [vb pp] in any	44
12	have been [vb pp] in all	35
13	have been [vb pp] in such	28
14	have been used in [det]	26
15	have been found in [det]	25
16	have been made in [det]	24
17	to have been [vb pp] in [det]	22
18	have been [vb pp] in these	21
19	have been [vb pp] in most	20
20	have been described in [det]	17
21	have been [vb pp] in half	15
22	have been cut in [det]	14
23	have been included in [det]	13
24	have been done in [det]	12
25	having been [vb pp] in [det]	12
26	have been shown in [det]	10
27	have been developed in [det]	10
28	have been [vb pp] in another	10
29	's been [vb pp] in [det]	10
30	have been [vb pp] in each	9