SN4 ""

No	Pattern	Freq
1	[vb mod] have been [prep] [det]	105
2	[modal v] have been [prep] [det]	105
3	[modal v] have been [prep] [det]	104
4	[modal v] have been in [det]	31
5	[modal v] have been in [det]	31
6	must have been [prep] [det]	26
7	must have been [prep] [det]	26
8	would have been [prep] [det]	25
9	[modal v] have been [prep] that	24
10	[modal v] have been [prep] this	23
11	would have been [prep] [det]	23
12	could have been [prep] [det]	21
13	could have been [prep] [det]	21
14	[modal v] have been [prep] some	18
15	[modal v] have been [prep] any	15
16	may have been [prep] [det]	13
17	[modal v] have been at [det]	13
18	[modal v] have been at [det]	13
19	may have been [prep] [det]	13
20	[modal v] have been of [det]	10
21	might have been [prep] [det]	10
22	might have been [prep] [det]	10
23	[modal v] have been of [det]	10
24	[modal v] have been like [det]	9
25	[modal v] have been like [det]	9
26	[modal v] have been on [det]	7
27	[modal v] have been on [det]	7
28	[modal v] have been to [det]	5
29	[modal v] have been to [det]	5
30	should have been [prep] [det]	5