SN4 ""

No	Pattern	Freq
1	who [modal v] have been [vb pp]	72
2	who [vb mod] have been [vb pp]	72
3	who [verb] have been [vb pp]	21
4	who would have been [vb pp]	19
5	who would have been [vb pp]	19
6	who may have been [vb pp]	16
7	who may have been [vb pp]	16
8	who should have been [vb pp]	11
9	who could have been [vb pp]	11
10	who could have been [vb pp]	11
11	who should have been [vb pp]	11
12	who [pron] have been [vb pp]	10
13	who [adv] have been [vb pp]	10
14	who [adv] have been [vb pp]	10
15	who might have been [vb pp]	8
16	who might have been [vb pp]	8
17	who [vb base] have been [vb pp]	8
18	who [vb past] have been [vb pp]	7
19	who seem have been [vb pp]	7
20	who claim have been [vb pp]	7
21	who [vb -s] have been [vb pp]	6
22	who [pers pn] have been [vb pp]	5
23	[noun] who have been [vb pp]	1237
24	[noun sg] who have been [vb pp]	512
25	[noun pl] who have been [vb pp]	495
26	[adj] who have been [vb pp]	169
27	[det] who have been [vb pp]	137
28	[n mass] who have been [vb pp]	133
29	people who have been [vb pp]	130
30	people who have been [vb pp]	130