SN4 ""

No	Pattern	Freq
1	has been [verb] that	1594
2	has be [vb pp] that	1552
3	has be suggest that	378
4	has be suggested that	374
5	has be argue that	161
6	has be argued that	159
7	has be show that	131
8	has be shown that	125
9	has be estimate that	120
10	has be estimated that	120
11	has be say that	89
12	has be said that	84
13	has be tell that	64
14	has be told that	64
15	has be held that	63
16	has be hold that	63
17	has be found that	62
18	has be find that	62
19	has be claim that	43
20	has be claimed that	42
21	has be propose that	29
22	has be assume that	29
23	has be proposed that	29
24	has be [to-vb] that	28
25	has be assumed that	27
26	has be report that	27
27	has be reported that	27
28	has be calculate that	25
29	has be calculated that	25
30	has be demonstrate that	22