SN4 ""

No	Pattern	Freq
1	[noun] which have been [adj]	177
2	[noun sg] which have been [adj]	109
3	[noun pl] which have been [adj]	61
4	of which have been [adj]	18
5	[prep] which have been [adj]	18
6	[prep] which have been [adj]	18
7	of which have been [adj]	18
8	[noun prp] which have been [adj]	6
9	[coord] which have been [adj]	5
10	[conj] which have been [adj]	5
11	which [modal v] have been [adj]	141
12	which [vb mod] have been [adj]	141
13	which [pron] have been [adj]	84
14	which would have been [adj]	75
15	which would have been [adj]	75
16	which [pers pn] have been [adj]	62
17	which [noun] have been [adj]	27
18	which may have been [adj]	22
19	which may have been [adj]	22
20	which there have been [adj]	21
21	which there have been [adj]	21
22	which [ex0] have been [adj]	21
23	which must have been [adj]	19
24	which must have been [adj]	19
25	which he have been [adj]	17
26	which he have been [adj]	17
27	which [noun prp] have been [adj]	14
28	which should have been [adj]	10
29	which she have been [adj]	10
30	which she have been [adj]	10