SN4 ""

No	Pattern	Freq
1	have been [prep] [noun] for	450
2	have been [prep] [noun sg] for	342
3	have been in [noun] for	282
4	had been [prep] [noun] for	164
5	has been [prep] [noun] for	127
6	have been [prep] [noun prp] for	89
7	have been [prep] [noun] for	82
8	have been [prep] existence for	36
9	have been [prep] existence for	36
10	have been on [noun] for	35
11	have been at [noun] for	33
12	have been under [noun] for	33
13	have been with [noun] for	30
14	've been [prep] [noun] for	27
15	have been [prep] operation for	20
16	have been [prep] operation for	20
17	have been [prep] [noun pl] for	19
18	have been [prep] use for	18
19	have been [prep] use for	18
20	have been [prep] [noun] for	17
21	have been [prep] work for	15
22	have been [prep] work for	15
23	have been [prep] hospital for	15
24	have been [prep] hospital for	15
25	have been [prep] place for	12
26	have been to [noun] for	12
27	have been [prep] prison for	12
28	have been [prep] place for	12
29	have been [prep] prison for	12
30	's been [prep] [noun] for	11