SN4 ""

No	Pattern	Freq
1	the [noun] [modal v] have been [adj]	357
2	the [noun] [vb mod] have been [adj]	357
3	the [noun] [modal v] have been [adj]	352
4	the [noun] [modal v] have been [adj]	287
5	the [noun sg] [modal v] have been [adj]	262
6	the [noun] would have been [adj]	149
7	the [noun] would have been [adj]	149
8	the [noun pl] [modal v] have been [adj]	82
9	the [noun] must have been [adj]	52
10	the [noun] must have been [adj]	52
11	the [noun] may have been [adj]	49
12	the [noun] may have been [adj]	49
13	the [noun] might have been [adj]	43
14	the [noun] might have been [adj]	43
15	the [noun] [modal v] have been [adj -er]	42
16	the [noun] could have been [adj]	40
17	the [noun] could have been [adj]	40
18	the [noun] [modal v] have been different	29
19	the [noun] [modal v] have been different	29
20	the [noun] should have been [adj]	20
21	the [noun] should have been [adj]	20
22	the result [modal v] have been [adj]	15
23	the [noun] [modal v] have been able	15
24	the [noun] [modal v] have been able	15
25	the [noun] [modal v] have been [det]	14
26	the [noun prp] [modal v] have been [adj]	13
27	the [noun] [modal v] have been [num]	13
28	the [noun] [modal v] have been impossible	8
29	the result [modal v] have been [adj]	8
30	the [noun] [modal v] have been impossible	8