SN4 ""

No	Pattern	Freq
1	[conj] it is [vb pp] that [pron]	184
2	[subord] it is [vb pp] that [pron]	89
3	[coord] it is [vb pp] that [pron]	88
4	and it is [vb pp] that [pron]	59
5	and it is [vb pp] that [pron]	59
6	if it is [vb pp] that [pron]	33
7	if it is [vb pp] that [pron]	33
8	[noun] it is [vb pp] that [pron]	33
9	but it is [vb pp] that [pron]	28
10	but it is [vb pp] that [pron]	28
11	[noun sg] it is [vb pp] that [pron]	27
12	[adv] it is [vb pp] that [pron]	22
13	[adv] it is [vb pp] that [pron]	14
14	when it is [vb pp] that [pron]	13
15	when it is [vb pp] that [pron]	13
16	because it is [vb pp] that [pron]	9
17	because it is [vb pp] that [pron]	9
18	where it is [vb pp] that [pron]	8
19	where it is [vb pp] that [pron]	8
20	[Wh adv] it is [vb pp] that [pron]	8
21	[adj] it is [vb pp] that [pron]	7
22	that it is [vb pp] that [pron]	7
23	[that] it is [vb pp] that [pron]	7
24	that it is [vb pp] that [pron]	7
25	[verb] it is [vb pp] that [pron]	6
26	although it is [vb pp] that [pron]	5
27	unless it is [vb pp] that [pron]	5
28	unless it is [vb pp] that [pron]	5
29	although it is [vb pp] that [pron]	5
30	it is [adv] [vb pp] that [pron]	161