SN4 ""

No	Pattern	Freq
1	it [vb past] in [noun sg]	184
2	it [vb past] in [noun prp]	170
3	it [vb past] in [noun pl]	41
4	it did in [noun]	41
5	it had in [noun]	23
6	it happened in [noun]	16
7	it [vb past] in fact	14
8	it [vb past] in fact	14
9	it arrived in [noun]	11
10	it ended in [noun]	11
11	it [vb past] in october	10
12	it [vb past] in october	10
13	it appeared in [noun]	9
14	it remained in [noun]	9
15	it came in [noun]	8
16	it [vb past] in practice	8
17	it [vb past] in practice	8
18	it [vb past] in april	8
19	it started in [noun]	8
20	it [vb past] in april	8
21	it [vb past] in part	7
22	it [vb past] in use	7
23	it [vb past] in december	7
24	it [vb past] in use	7
25	it worked in [noun]	7
26	it [vb past] in may	7
27	it [vb past] in december	7
28	it [vb past] in may	7
29	it [vb past] in july	6
30	it began in [noun]	6