SN4 ""

No	Pattern	Freq
1	[vb mod] have been [adj]	4803
2	[modal v] have been [adj]	4711
3	[modal v] have been [adj]	3628
4	would have been [adj]	2339
5	would have been [adj]	2237
6	must have been [adj]	760
7	must have been [adj]	760
8	may have been [adj]	548
9	may have been [adj]	548
10	might have been [adj]	462
11	might have been [adj]	462
12	[modal v] have been [adj -er]	427
13	[modal v] have been [det]	370
14	[modal v] have been [num]	354
15	could have been [adj]	353
16	could have been [adj]	353
17	should have been [adj]	227
18	should have been [adj]	227
19	[modal v] have been good	196
20	[modal v] have been able	194
21	[modal v] have been able	194
22	[modal v] have been better	162
23	[modal v] have been one	117
24	[modal v] have been one	117
25	[modal v] have been different	110
26	[modal v] have been different	110
27	[modal v] have been some	104
28	[modal v] have been some	104
29	'd have been [adj]	102
30	[modal v] have been easy	92