SN4 ""

No	Pattern	Freq
1	it have been [pos pn]	146
2	it had been [pron]	136
3	it has been [pron]	45
4	it have been my	38
5	it have been my	38
6	it have been her	38
7	it have been her	38
8	it have been his	38
9	it have been [pers pn]	37
10	it have been his	37
11	it 's been [pron]	26
12	it have been [indef pn]	23
13	it have been our	17
14	it have been our	17
15	it have been i	12
16	it have been anyone	9
17	it have been their	9
18	it have been their	9
19	it have been anyone	9
20	it have been he	9
21	it have been me	8
22	it have been she	7
23	it have been your	6
24	it have been [Wh det]	6
25	it have been your	6
26	it have been she	6
27	it have been he	6
28	it have been something	5
29	it have been what	5
30	it have been what	5