SN4 ""

No	Pattern	Freq
1	[vb mod] have been [prep] [adj]	214
2	[modal v] have been [prep] [adj]	213
3	[modal v] have been [prep] [det]	105
4	[modal v] have been in [adj]	81
5	[modal v] have been [prep] [adj]	71
6	would have been [prep] [adj]	66
7	would have been [prep] [adj]	63
8	must have been [prep] [adj]	51
9	must have been [prep] [adj]	51
10	may have been [prep] [adj]	33
11	may have been [prep] [adj]	33
12	could have been [prep] [adj]	30
13	could have been [prep] [adj]	30
14	[modal v] have been [prep] [num]	28
15	[modal v] have been of [adj]	26
16	[modal v] have been [prep] that	24
17	[modal v] have been [prep] that	24
18	[modal v] have been [prep] this	23
19	[modal v] have been [prep] this	23
20	[modal v] have been at [adj]	21
21	might have been [prep] [adj]	19
22	might have been [prep] [adj]	19
23	[modal v] have been [prep] some	18
24	[modal v] have been [prep] some	18
25	[modal v] have been [prep] any	15
26	[modal v] have been [prep] any	15
27	[modal v] have been on [adj]	12
28	[modal v] have been like [adj]	11
29	[modal v] have been for [adj]	9
30	should have been [prep] [adj]	8