SN4 ""

No	Pattern	Freq
1	[modal v] have been [prep] [det]	104
2	[vb mod] have been [prep] [det]	104
3	[modal v] have been in [det]	30
4	[modal v] have been in [det]	30
5	must have been [prep] [det]	26
6	must have been [prep] [det]	26
7	would have been [prep] [det]	25
8	[modal v] have been [prep] that	23
9	[modal v] have been [prep] this	23
10	would have been [prep] [det]	23
11	could have been [prep] [det]	21
12	could have been [prep] [det]	21
13	[modal v] have been [prep] some	18
14	[modal v] have been [prep] any	15
15	[modal v] have been at [det]	13
16	[modal v] have been at [det]	13
17	may have been [prep] [det]	13
18	may have been [prep] [det]	13
19	might have been [prep] [det]	10
20	[modal v] have been of [det]	10
21	[modal v] have been of [det]	10
22	might have been [prep] [det]	10
23	[modal v] have been like [det]	9
24	[modal v] have been like [det]	9
25	[modal v] have been on [det]	7
26	[modal v] have been on [det]	7
27	[modal v] have been for [det]	5
28	[modal v] have been to [det]	5
29	[modal v] have been to [det]	5
30	should have been [prep] [det]	5