SN4 ""

No	Pattern	Freq
1	[subord] it have been [prep]	238
2	[subord] it had been [prep]	164
3	as it have been [prep]	107
4	[subord] it have been in	103
5	[subord] it have been in	103
6	than it have been [prep]	81
7	[subord] it has been [prep]	56
8	[subord] it have been for	38
9	[subord] it have been for	38
10	[subord] it 's been [prep]	17
11	[subord] it have been before	17
12	[subord] it have been before	17
13	if it have been [prep]	16
14	[subord] it have been at	14
15	[subord] it have been at	14
16	[subord] it have been on	12
17	[subord] it have been on	12
18	[subord] it have been since	10
19	[subord] it have been since	10
20	[subord] it have been under	6
21	[subord] it have been under	6
22	[subord] it have been of	5
23	[subord] it have been of	5
24	[subord] it have been to	5
25	[subord] it have been to	5
26	[subord] it have been with	5
27	because it have been [prep]	5
28	[subord] it have been with	5