SN4 ""

No	Pattern	Freq
1	it have [adv] been	2100
2	it has [adv] been	1559
3	it had [adv] been	1104
4	it have [not/n't] been	954
5	it have not been	954
6	it have not been	550
7	it have n't been	404
8	it 's [adv] been	383
9	it have always been	337
10	it have always been	337
11	it have also been	234
12	it have also been	234
13	it have never been	189
14	it have never been	189
15	it have already been	167
16	it have already been	167
17	it have long been	138
18	it have long been	138
19	it have all been	132
20	it have all been	132
21	it have now been	82
22	it have now been	82
23	it have ever been	75
24	it have ever been	75
25	it have often been	74
26	it have often been	74
27	it have only been	73
28	it have only been	73
29	it have just been	72
30	it have just been	72