SN4 ""

No	Pattern	Freq
1	is [adv] [vb pp] that [det]	136
2	is [adv] [vb pp] that [adj]	96
3	is generally [vb pp] that [adj]	36
4	is [adv] [vb pp] that this	35
5	is [adv] [vb pp] that this	35
6	is [adv] known that [adj]	31
7	is well [vb pp] that [adj]	30
8	is often [vb pp] that [adj]	26
9	is [adv] assumed that [adj]	26
10	is [adv] accepted that [adj]	25
11	is widely [vb pp] that [adj]	23
12	is also [vb pp] that [adj]	22
13	is now [vb pp] that [adj]	21
14	is sometimes [vb pp] that [adj]	18
15	is [adv] said that [adj]	17
16	is [adv] [vb pp] that such	16
17	is [adv] [vb pp] that such	16
18	is [adv] [vb pp] that these	16
19	is [adv] [vb pp] that these	16
20	is [adv] [vb pp] that all	15
21	is [adv] [vb pp] that all	15
22	is [adv] recognised that [adj]	15
23	is [adv] [vb pp] that [num]	13
24	is [adv] [vb pp] that many	11
25	is [adv] [vb pp] that some	11
26	is [adv] [vb pp] that many	11
27	is [adv] [vb pp] that some	11
28	is [adv] argued that [adj]	10
29	is [adv] agreed that [adj]	9
30	is commonly [vb pp] that [adj]	9