SN4 ""

No	Pattern	Freq
1	[conj] it is [vb pp] that a	65
2	[subord] it is [vb pp] that a	37
3	[coord] it is [vb pp] that a	23
4	and it is [vb pp] that a	17
5	and it is [vb pp] that a	17
6	[noun] it is [vb pp] that a	16
7	if it is [vb pp] that a	12
8	if it is [vb pp] that a	12
9	[noun sg] it is [vb pp] that a	11
10	[adv] it is [vb pp] that a	10
11	[adv] it is [vb pp] that a	6
12	but it is [vb pp] that a	6
13	because it is [vb pp] that a	6
14	but it is [vb pp] that a	6
15	because it is [vb pp] that a	6
16	when it is [vb pp] that a	5
17	that it is [vb pp] that a	5
18	when it is [vb pp] that a	5
19	that it is [vb pp] that a	5
20	[that] it is [vb pp] that a	5
21	it is [adv] [vb pp] that a	70
22	it is [adv] [vb pp] that a	68
23	it is generally [vb pp] that a	11
24	it is generally [vb pp] that a	11
25	it is also [vb pp] that a	10
26	it is also [vb pp] that a	10
27	it is well [vb pp] that a	8
28	it is well [vb pp] that a	8
29	it is often [vb pp] that a	6
30	it is sometimes [vb pp] that a	6