SN4 ""

No	Pattern	Freq
1	who have been [prep] [noun sg]	150
2	who had been [prep] [noun]	122
3	who have been in [noun]	115
4	who have been [prep] [noun prp]	75
5	who has been [prep] [noun]	40
6	who have been [prep] [noun]	40
7	who have been on [noun]	37
8	who have been at [noun]	27
9	who have been to [noun]	24
10	who have been with [noun]	17
11	who 'd been [prep] [noun]	15
12	who have been under [noun]	13
13	who have been [prep] [noun pl]	13
14	who have been [prep] prison	12
15	who have been [prep] prison	12
16	who have been [prep] charge	12
17	who 's been [prep] [noun]	12
18	who have been [prep] charge	12
19	who 've been [prep] [noun]	9
20	who have been [prep] house	8
21	who have been [prep] house	8
22	who have been [prep] duty	6
23	who have been [prep] strike	6
24	who have been [prep] contact	6
25	who have been [prep] hospital	6
26	who have been [prep] hospital	6
27	who have been [prep] strike	6
28	who have been [prep] duty	6
29	who have been [prep] contact	6
30	who have been [prep] work	5