SN4 ""

No	Pattern	Freq
1	who have been [verb]	3325
2	who have been [vb pp]	2294
3	who had been [verb]	1785
4	who have been [v-ing]	1024
5	who have been [verb]	619
6	who has been [verb]	537
7	who 's been [verb]	141
8	who 'd been [verb]	138
9	who 've been [verb]	103
10	who have been appointed	73
11	who have been appoint	73
12	who have been give	68
13	who have been given	64
14	who have been arrested	45
15	who have been arrest	45
16	who have been brought	44
17	who have been bring	44
18	who have been kill	43
19	who have been killed	43
20	who have been make	43
21	who have been elected	40
22	who have been take	40
23	who have been elect	40
24	who have been working	39
25	who have been work	39
26	who have been do	34
27	who have been made	34
28	who have been watch	34
29	who have been doing	33
30	who have been watching	33