SN4 ""

No	Pattern	Freq
1	it have [vb pp]	13932
2	it has [vb pp]	4832
3	it 's [vb pp]	4596
4	it had [vb pp]	4333
5	it have got	2041
6	it have become	775
7	it have gone	697
8	it have taken	505
9	it have come	418
10	it have done	397
11	it have happened	321
12	it have made	291
13	it have had	267
14	it have given	149
15	it have proved	132
16	it have seemed	123
17	it have lost	113
18	it have received	112
19	it have begun	109
20	it have started	106
21	it have changed	101
22	it have left	94
23	it have grown	89
24	it have set	88
25	it have turned	85
26	it have fallen	83
27	it have developed	83
28	it have reached	82
29	it have worked	78
30	it have brought	76