SN4 ""

No	Pattern	Freq
1	[conj] it is [adv] that [pers pn]	19
2	[coord] it is [adv] that [pers pn]	15
3	and it is [adv] that [pers pn]	14
4	and it is [adv] that [pers pn]	14
5	[noun] it is [adv] that [pers pn]	6
6	[verb] it is [adv] that [pers pn]	5
7	it is [adv] [adv] that [pers pn]	42
8	it is [adv] [adv] that [pers pn]	26
9	it is only [adv] that [pers pn]	19
10	it is only [adv] that [pers pn]	19
11	it is [not/n't] [adv] that [pers pn]	16
12	it is not [adv] that [pers pn]	16
13	it is [adj] [adv] that [pers pn]	13
14	it is [adj] [adv] that [pers pn]	13
15	it is not [adv] that [pers pn]	12
16	it is [adv] [adj] that [pers pn]	386
17	it is [adv] [adj] that [pers pn]	382
18	it is [adv] [verb] that [pers pn]	102
19	it is [adv] [vb pp] that [pers pn]	98
20	it is [adv] important that [pers pn]	75
21	it is [adv] important that [pers pn]	75
22	it is [adv] likely that [pers pn]	36
23	it is [adv] likely that [pers pn]	36
24	it is [adv] unlikely that [pers pn]	32
25	it is [adv] unlikely that [pers pn]	32
26	it is [adv] [adv] that [pers pn]	26
27	it is [adv] [adv] that [pers pn]	26
28	it is [adv] surprising that [pers pn]	24
29	it is [adv] surprising that [pers pn]	24
30	it is [adv] clear that [pers pn]	23