SN4 ""

No	Pattern	Freq
1	[verb] it [adv] [adv] that	49
2	[vb past] it [adv] [adv] that	17
3	[vb base] it [adv] [adv] that	12
4	do it [adv] [adv] that	9
5	[v-ing] it [adv] [adv] that	7
6	[prep] it [adv] [adv] that	6
7	[prep] it [adv] [adv] that	6
8	be it [adv] [adv] that	5
9	[to-vb] it [adv] [adv] that	5
10	[be] it [adv] [adv] that	5
11	it be [adv] [adv] that	176
12	it [be] [adv] [adv] that	176
13	it [was/were] [adv] [adv] that	90
14	it was [adv] [adv] that	90
15	it [is] [adv] [adv] that	86
16	it is [adv] [adv] that	64
17	it [verb] [adv] [adv] that	38
18	it 's [adv] [adv] that	22
19	it [vb past] [adv] [adv] that	21
20	it [vb -s] [adv] [adv] that	16
21	it [adv] [adv] [adv] that	12
22	it [adv prt] [adv] [adv] that	8
23	it happen [adv] [adv] that	5
24	it [adv] [verb] [adv] that	9
25	it [adv] [vb past] [adv] that	5
26	it [adv] [adv] [verb] that	44
27	it [adv] [adv] [adj] that	32
28	it [adv] [adv] [adj] that	32
29	it [adv] [adv] happen that	29
30	it [adv] [adv] [vb -s] that	27