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] appoint	73
11	who have [been] appointed	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] bring	44
17	who have [been] brought	44
18	who have [been] killed	43
19	who have [been] kill	43
20	who have [been] make	43
21	who have [been] elected	40
22	who have [been] elect	40
23	who have [been] take	40
24	who have [been] working	39
25	who have [been] work	39
26	who have [been] made	34
27	who have [been] watch	34
28	who have [been] do	34
29	who have [been] watching	33
30	who have [been] doing	33