SN4 ""

No	Pattern	Freq
1	it [adv] [verb] that	992
2	it [adv] [vb -s] that	619
3	it also [verb] that	419
4	it [adv] [vb past] that	323
5	it [adv] mean that	138
6	it [adv] happen that	125
7	it [adv] means that	104
8	it [adv] seem that	83
9	it [adv] happens that	75
10	it so [verb] that	73
11	it [adv] follow that	69
12	it [adv] seems that	61
13	it [adv] follows that	59
14	it now [verb] that	56
15	it [adv] appear that	54
16	it [adv] happened that	49
17	it [adv] say that	46
18	it just [verb] that	46
19	it therefore [verb] that	44
20	it [adv] suggest that	42
21	it [adv] appears that	41
22	it [adv] show that	41
23	it often [verb] that	34
24	it [adv] shows that	33
25	it [adv] meant that	30
26	it [adv] emerge that	30
27	it [adv] suggests that	28
28	it [adv] emerged that	28
29	it [adv] transpire that	24
30	it [adv] ensure that	23