SN4 ""

No	Pattern	Freq
1	it have be [verb] that [adj]	115
2	it have [be] [verb] that [adj]	115
3	it have been [verb] that [adj]	115
4	it have [be] [vb pp] that [adj]	115
5	it have [been] [verb] that [adj]	115
6	it have [be] [verb] that [adj]	115
7	it has [be] [verb] that [adj]	105
8	it have [be] suggest that [adj]	22
9	it have [be] suggested that [adj]	22
10	it have [be] argued that [adj]	13
11	it have [be] shown that [adj]	13
12	it have [be] show that [adj]	13
13	it have [be] argue that [adj]	13
14	it had [be] [verb] that [adj]	8
15	it have [be] claimed that [adj]	8
16	it have [be] estimated that [adj]	8
17	it have [be] claim that [adj]	8
18	it have [be] estimate that [adj]	8
19	it have [be] find that [adj]	6
20	it have [be] found that [adj]	6
21	it have [be] reported that [adj]	6
22	it have [be] report that [adj]	6
23	it have [be] established that [adj]	5
24	it have [be] assumed that [adj]	5
25	it have [be] establish that [adj]	5
26	it have [be] assume that [adj]	5