SN4 ""

No	Pattern	Freq
1	[noun] which [modal v] have been [adj]	75
2	[noun sg] which [modal v] have been [adj]	48
3	[noun pl] which [modal v] have been [adj]	27
4	[pron] which [modal v] have been [adj]	7
5	of which [modal v] have been [adj]	7
6	[prep] which [modal v] have been [adj]	7
7	of which [modal v] have been [adj]	7
8	[prep] which [modal v] have been [adj]	7
9	[indef pn] which [modal v] have been [adj]	6
10	which [pron] [modal v] have been [adj]	15
11	which [pers pn] [modal v] have been [adj]	14
12	which it [modal v] have been [adj]	8
13	which it [modal v] have been [adj]	8
14	which [noun] [modal v] have been [adj]	7
15	which [adv] [modal v] have been [adj]	6
16	which [adv] [modal v] have been [adj]	6
17	which [modal v] [adv] have been [adj]	35
18	which [modal v] [adv] have been [adj]	20
19	which [modal v] [not/n't] have been [adj]	15
20	which [modal v] not have been [adj]	15
21	which [modal v] not have been [adj]	15
22	which [modal v] otherwise have been [adj]	9
23	which [modal v] otherwise have been [adj]	9
24	which [modal v] have been [adv] [adj]	43
25	which [modal v] have been [adv] [adj]	43
26	which [modal v] have been [art] [adj]	35
27	which [modal v] have been [art] [adj]	35
28	which [modal v] have been a [adj]	24
29	which [modal v] have been a [adj]	21
30	which [modal v] have been [verb] [adj]	12