SN4 ""

No	Pattern	Freq
1	[conj] it usually	92
2	[subord] it usually	44
3	[coord] it usually	36
4	as it usually	22
5	as it usually	22
6	[noun] it usually	20
7	and it usually	18
8	and it usually	18
9	but it usually	17
10	but it usually	17
11	[verb] it usually	15
12	[noun sg] it usually	13
13	[adv] it usually	13
14	that it usually	12
15	that it usually	12
16	[that] it usually	12
17	[pron] it usually	10
18	[adv] it usually	9
19	which it usually	8
20	because it usually	8
21	because it usually	8
22	which it usually	8
23	[Wh det] it usually	8
24	[noun pl] it usually	7
25	[prep] it usually	6
26	[prep] it usually	6
27	[be] it usually	5
28	be it usually	5
29	it [be] usually	723
30	it be usually	723