SN4 ""

No	Pattern	Freq
1	it [vb -s] been [verb] that [det]	136
2	it [vb -s] been [vb pp] that [det]	136
3	it has been [verb] that [det]	132
4	it [vb -s] been [verb] that this	53
5	it [vb -s] been suggested that [det]	39
6	it [vb -s] been suggest that [det]	39
7	it [vb -s] been argued that [det]	19
8	it [vb -s] been [verb] that these	19
9	it [vb -s] been argue that [det]	19
10	it [vb -s] been [verb] that some	17
11	it [vb -s] been estimate that [det]	16
12	it [vb -s] been estimated that [det]	16
13	it [vb -s] been [verb] that such	13
14	it [vb -s] been show that [det]	11
15	it [vb -s] been shown that [det]	11
16	it [vb -s] been find that [det]	7
17	it [vb -s] been found that [det]	7
18	it [vb -s] been [verb] that all	7
19	it [vb -s] been [verb] that many	6
20	it [vb -s] been assumed that [det]	5
21	it [vb -s] been assume that [det]	5
22	it [vb -s] been hold that [det]	5
23	it [vb -s] been held that [det]	5