SN4 ""

No	Pattern	Freq
1	it have been [vb pp] [prep]	1838
2	it has been [vb pp] [prep]	934
3	it had been [vb pp] [prep]	665
4	it have been [vb pp] by	483
5	it have been [vb pp] by	483
6	it have been [vb pp] in	293
7	it have been [vb pp] in	293
8	it have been [vb pp] to	225
9	it have been [vb pp] to	225
10	it 's been [vb pp] [prep]	215
11	it have been [vb pp] for	172
12	it have been [vb pp] for	172
13	it have been [vb pp] as	108
14	it have been [vb pp] as	108
15	it have been [vb pp] with	92
16	it have been [vb pp] with	92
17	it have been [vb pp] on	80
18	it have been [vb pp] on	80
19	it have been [vb pp] from	79
20	it have been [vb pp] from	79
21	it have been [vb pp] at	69
22	it have been [vb pp] at	69
23	it have been [vb pp] into	67
24	it have been [vb pp] into	67
25	it have been used [prep]	57
26	it have been known [prep]	49
27	it have been suggested [prep]	47
28	it have been shown [prep]	34
29	it have been made [prep]	32
30	it have been [vb pp] of	30